45257831 has 2 divisors, whose sum is σ = 45257832. Its totient is φ = 45257830.

The previous prime is 45257789. The next prime is 45257833. The reversal of 45257831 is 13875254.

It is a happy number.

45257831 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45257831 is a prime.

It is a super-2 number, since 2×45257831² = 4096542533649122, which contains 22 as substring.

Together with 45257833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 45257791 and 45257800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45257833) 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 as a sum of consecutive naturals, namely, 22628915 + 22628916.

It is an arithmetic number, because the mean of its divisors is an integer number (22628916).

Almost surely, 2^45257831 is an apocalyptic number.

45257831 is a deficient number, since it is larger than the sum of its proper divisors (1).

45257831 is an equidigital number, since it uses as much as digits as its factorization.

45257831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 35.

The square root of 45257831 is about 6727.3940720014. The cubic root of 45257831 is about 356.3673537252.

The spelling of 45257831 in words is "forty-five million, two hundred fifty-seven thousand, eight hundred thirty-one".