10557431 has 2 divisors, whose sum is σ = 10557432. Its totient is φ = 10557430.

The previous prime is 10557409. The next prime is 10557433. The reversal of 10557431 is 13475501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10557431 is a prime.

It is a super-2 number, since 2×10557431² = 222918698639522, which contains 22 as substring.

Together with 10557433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10557431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10557433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5278715 + 5278716.

It is an arithmetic number, because the mean of its divisors is an integer number (5278716).

Almost surely, 2^10557431 is an apocalyptic number.

10557431 is a deficient number, since it is larger than the sum of its proper divisors (1).

10557431 is an equidigital number, since it uses as much as digits as its factorization.

10557431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 10557431 is about 3249.2200602606. The cubic root of 10557431 is about 219.3744696594.

The spelling of 10557431 in words is "ten million, five hundred fifty-seven thousand, four hundred thirty-one".