45290831 has 2 divisors, whose sum is σ = 45290832. Its totient is φ = 45290830.

The previous prime is 45290821. The next prime is 45290857. The reversal of 45290831 is 13809254.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45290831 is a prime.

It is a super-2 number, since 2×45290831² = 4102518745341122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is equal to p_2734745 and since 45290831 and 2734745 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (45290801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22645415 + 22645416.

It is an arithmetic number, because the mean of its divisors is an integer number (22645416).

Almost surely, 2^45290831 is an apocalyptic number.

45290831 is a deficient number, since it is larger than the sum of its proper divisors (1).

45290831 is an equidigital number, since it uses as much as digits as its factorization.

45290831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 45290831 is about 6729.8462835343. The cubic root of 45290831 is about 356.4539484297.

The spelling of 45290831 in words is "forty-five million, two hundred ninety thousand, eight hundred thirty-one".