40452531 has 16 divisors (see below), whose sum is σ = 62191104. Its totient is φ = 22909824.

The previous prime is 40452509. The next prime is 40452541. The reversal of 40452531 is 13525404.

It is not a de Polignac number, because 40452531 - 2⁹ = 40452019 is a prime.

It is a super-2 number, since 2×40452531² = 3272814528611922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40452541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6151 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (3886944).

Almost surely, 2^40452531 is an apocalyptic number.

40452531 is a deficient number, since it is larger than the sum of its proper divisors (21738573).

40452531 is a wasteful number, since it uses less digits than its factorization.

40452531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17170.

The product of its (nonzero) digits is 2400, while the sum is 24.

The square root of 40452531 is about 6360.2304203543. The cubic root of 40452531 is about 343.2800513246.

Adding to 40452531 its reverse (13525404), we get a palindrome (53977935).

The spelling of 40452531 in words is "forty million, four hundred fifty-two thousand, five hundred thirty-one".