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12472451 = 43290057
BaseRepresentation
bin101111100101…
…000010000011
3212110122222122
4233211002003
511143104301
61123154455
7211004555
oct57450203
925418878
1012472451
117049812
124215a2b
132779064
1419294d5
15116581b
hexbe5083

12472451 has 4 divisors (see below), whose sum is σ = 12762552. Its totient is φ = 12182352.

The previous prime is 12472433. The next prime is 12472469. The reversal of 12472451 is 15427421.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 15427421 = 47328243.

It is an interprime number because it is at equal distance from previous prime (12472433) and next prime (12472469).

It is a cyclic number.

It is not a de Polignac number, because 12472451 - 26 = 12472387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12472451.

It is not an unprimeable number, because it can be changed into a prime (12472051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144986 + ... + 145071.

It is an arithmetic number, because the mean of its divisors is an integer number (3190638).

Almost surely, 212472451 is an apocalyptic number.

12472451 is a deficient number, since it is larger than the sum of its proper divisors (290101).

12472451 is an equidigital number, since it uses as much as digits as its factorization.

12472451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290100.

The product of its digits is 2240, while the sum is 26.

The square root of 12472451 is about 3531.6357399936. The cubic root of 12472451 is about 231.9088214337.

Adding to 12472451 its reverse (15427421), we get a palindrome (27899872).

The spelling of 12472451 in words is "twelve million, four hundred seventy-two thousand, four hundred fifty-one".

Divisors: 1 43 290057 12472451