40523540 has 24 divisors (see below), whose sum is σ = 85754592. Its totient is φ = 16084640.

The previous prime is 40523537. The next prime is 40523573. The reversal of 40523540 is 4532504.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5114 + ... + 10353.

It is an arithmetic number, because the mean of its divisors is an integer number (3573108).

Almost surely, 2^40523540 is an apocalyptic number.

It is an amenable number.

40523540 is an abundant number, since it is smaller than the sum of its proper divisors (45231052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40523540 is a wasteful number, since it uses less digits than its factorization.

40523540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15607 (or 15605 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 40523540 is about 6365.8102390819. The cubic root of 40523540 is about 343.4807946282.

It can be divided in two parts, 40523 and 540, that multiplied together give a triangular number (21882420 = T₆₆₁₅).

The spelling of 40523540 in words is "forty million, five hundred twenty-three thousand, five hundred forty".