12551953 has 4 divisors (see below), whose sum is σ = 12568500. Its totient is φ = 12535408.

The previous prime is 12551941. The next prime is 12551971. The reversal of 12551953 is 35915521.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35915521 = 167 ⋅215063.

It can be written as a sum of positive squares in 2 ways, for example, as 2458624 + 10093329 = 1568^2 + 3177^2 .

It is a cyclic number.

It is not a de Polignac number, because 12551953 - 2¹³ = 12543761 is a prime.

It is a super-2 number, since 2×12551953² = 315103048228418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12551923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7078 + ... + 8671.

It is an arithmetic number, because the mean of its divisors is an integer number (3142125).

Almost surely, 2^12551953 is an apocalyptic number.

It is an amenable number.

12551953 is a deficient number, since it is larger than the sum of its proper divisors (16547).

12551953 is an equidigital number, since it uses as much as digits as its factorization.

12551953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16546.

The product of its digits is 6750, while the sum is 31.

The square root of 12551953 is about 3542.8735512293. The cubic root of 12551953 is about 232.4005232129.

The spelling of 12551953 in words is "twelve million, five hundred fifty-one thousand, nine hundred fifty-three".