12551731 has 2 divisors, whose sum is σ = 12551732. Its totient is φ = 12551730.

The previous prime is 12551711. The next prime is 12551753. The reversal of 12551731 is 13715521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12551731 - 2⁷ = 12551603 is a prime.

It is a super-2 number, since 2×12551731² = 315091902192722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 12551696 and 12551705.

It is not a weakly prime, because it can be changed into another prime (12551711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6275865 + 6275866.

It is an arithmetic number, because the mean of its divisors is an integer number (6275866).

Almost surely, 2^12551731 is an apocalyptic number.

12551731 is a deficient number, since it is larger than the sum of its proper divisors (1).

12551731 is an equidigital number, since it uses as much as digits as its factorization.

12551731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1050, while the sum is 25.

The square root of 12551731 is about 3542.8422205907. The cubic root of 12551731 is about 232.3991530883.

The spelling of 12551731 in words is "twelve million, five hundred fifty-one thousand, seven hundred thirty-one".