40475457 has 20 divisors (see below), whose sum is σ = 65961456. Its totient is φ = 24530040.

The previous prime is 40475443. The next prime is 40475459. The reversal of 40475457 is 75457404.

It is not a de Polignac number, because 40475457 - 2⁴ = 40475441 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40475459) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 21823 + ... + 23604.

Almost surely, 2^40475457 is an apocalyptic number.

It is an amenable number.

40475457 is a deficient number, since it is larger than the sum of its proper divisors (25485999).

40475457 is a wasteful number, since it uses less digits than its factorization.

40475457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45450 (or 45441 counting only the distinct ones).

The product of its (nonzero) digits is 78400, while the sum is 36.

The square root of 40475457 is about 6362.0324582636. The cubic root of 40475457 is about 343.3448890655.

The spelling of 40475457 in words is "forty million, four hundred seventy-five thousand, four hundred fifty-seven".