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153224233 = 827318521
BaseRepresentation
bin10010010001000…
…00010000101001
3101200022121010121
421020200100221
5303211133413
623112043241
73540245611
oct1110402051
9350277117
10153224233
11795446a8
1243393521
132598a636
14164c7a41
15d6b9b8d
hex9220429

153224233 has 4 divisors (see below), whose sum is σ = 153251028. Its totient is φ = 153197440.

The previous prime is 153224231. The next prime is 153224237. The reversal of 153224233 is 332422351.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 332422351 = 1671990553.

It can be written as a sum of positive squares in 2 ways, for example, as 140493609 + 12730624 = 11853^2 + 3568^2 .

It is a cyclic number.

It is not a de Polignac number, because 153224233 - 21 = 153224231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 153224198 and 153224207.

It is not an unprimeable number, because it can be changed into a prime (153224231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 988 + ... + 17533.

It is an arithmetic number, because the mean of its divisors is an integer number (38312757).

Almost surely, 2153224233 is an apocalyptic number.

It is an amenable number.

153224233 is a deficient number, since it is larger than the sum of its proper divisors (26795).

153224233 is an equidigital number, since it uses as much as digits as its factorization.

153224233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26794.

The product of its digits is 4320, while the sum is 25.

The square root of 153224233 is about 12378.3776400625. The cubic root of 153224233 is about 535.1092832916.

Adding to 153224233 its reverse (332422351), we get a palindrome (485646584).

The spelling of 153224233 in words is "one hundred fifty-three million, two hundred twenty-four thousand, two hundred thirty-three".

Divisors: 1 8273 18521 153224233