40553531 has 8 divisors (see below), whose sum is σ = 42431904. Its totient is φ = 38684800.

The previous prime is 40553519. The next prime is 40553563. The reversal of 40553531 is 13535504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40553531 - 2²² = 36359227 is a prime.

It is a super-2 number, since 2×40553531² = 3289177753135922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40553531.

It is not an unprimeable number, because it can be changed into a prime (40553131) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7025 + ... + 11421.

It is an arithmetic number, because the mean of its divisors is an integer number (5303988).

Almost surely, 2^40553531 is an apocalyptic number.

40553531 is a deficient number, since it is larger than the sum of its proper divisors (1878373).

40553531 is a wasteful number, since it uses less digits than its factorization.

40553531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821.

The product of its (nonzero) digits is 4500, while the sum is 26.

The square root of 40553531 is about 6368.1654344089. The cubic root of 40553531 is about 343.5655091115.

The spelling of 40553531 in words is "forty million, five hundred fifty-three thousand, five hundred thirty-one".