40508545 has 24 divisors (see below), whose sum is σ = 61691328. Its totient is φ = 25250400.

The previous prime is 40508539. The next prime is 40508557. The reversal of 40508545 is 54580504.

It is not a de Polignac number, because 40508545 - 2⁷ = 40508417 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4821 + ... + 10210.

It is an arithmetic number, because the mean of its divisors is an integer number (2570472).

Almost surely, 2^40508545 is an apocalyptic number.

It is an amenable number.

40508545 is a deficient number, since it is larger than the sum of its proper divisors (21182783).

40508545 is a wasteful number, since it uses less digits than its factorization.

40508545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15061 (or 15054 counting only the distinct ones).

The product of its (nonzero) digits is 16000, while the sum is 31.

The square root of 40508545 is about 6364.6323538756. The cubic root of 40508545 is about 343.4384231249.

The spelling of 40508545 in words is "forty million, five hundred eight thousand, five hundred forty-five".