40531572 has 36 divisors (see below), whose sum is σ = 104140036. Its totient is φ = 13288320.

The previous prime is 40531567. The next prime is 40531597. The reversal of 40531572 is 27513504.

It is a happy number.

40531572 is a `hidden beast` number, since 40 + 53 + 1 + 572 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 13220496 + 27311076 = 3636^2 + 5226^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7033 + ... + 11424.

Almost surely, 2^40531572 is an apocalyptic number.

It is an amenable number.

40531572 is an abundant number, since it is smaller than the sum of its proper divisors (63608464).

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

40531572 is a wasteful number, since it uses less digits than its factorization.

40531572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18528 (or 18523 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 40531572 is about 6366.4410780278. The cubic root of 40531572 is about 343.5034864224.

It can be divided in two parts, 4053 and 1572, that added together give a square (5625 = 75²).

The spelling of 40531572 in words is "forty million, five hundred thirty-one thousand, five hundred seventy-two".