45431657 has 4 divisors (see below), whose sum is σ = 46398336. Its totient is φ = 44464980.

The previous prime is 45431629. The next prime is 45431681. The reversal of 45431657 is 75613454.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 45431657 - 2⁸ = 45431401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45431257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483269 + ... + 483362.

It is an arithmetic number, because the mean of its divisors is an integer number (11599584).

Almost surely, 2^45431657 is an apocalyptic number.

45431657 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

45431657 is a deficient number, since it is larger than the sum of its proper divisors (966679).

45431657 is an equidigital number, since it uses as much as digits as its factorization.

45431657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 966678.

The product of its digits is 50400, while the sum is 35.

The square root of 45431657 is about 6740.3009576724. The cubic root of 45431657 is about 356.8230153709.

The spelling of 45431657 in words is "forty-five million, four hundred thirty-one thousand, six hundred fifty-seven".