43457157 has 6 divisors (see below), whose sum is σ = 62771462. Its totient is φ = 28971432.

The previous prime is 43457153. The next prime is 43457159. The reversal of 43457157 is 75175434.

It is a happy number.

43457157 is a `hidden beast` number, since 4 + 34 + 571 + 57 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43441281 + 15876 = 6591^2 + 126^2 .

It is not a de Polignac number, because 43457157 - 2² = 43457153 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43457153) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2414278 + ... + 2414295.

Almost surely, 2^43457157 is an apocalyptic number.

It is an amenable number.

43457157 is a deficient number, since it is larger than the sum of its proper divisors (19314305).

43457157 is a wasteful number, since it uses less digits than its factorization.

43457157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828579 (or 4828576 counting only the distinct ones).

The product of its digits is 58800, while the sum is 36.

The square root of 43457157 is about 6592.2042595781. The cubic root of 43457157 is about 351.5769846358.

The spelling of 43457157 in words is "forty-three million, four hundred fifty-seven thousand, one hundred fifty-seven".