40553965 has 4 divisors (see below), whose sum is σ = 48664764. Its totient is φ = 32443168.

The previous prime is 40553941. The next prime is 40553971. The reversal of 40553965 is 56935504.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 22762441 + 17791524 = 4771^2 + 4218^2 .

It is a cyclic number.

It is not a de Polignac number, because 40553965 - 2²⁵ = 6999533 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4055392 + ... + 4055401.

It is an arithmetic number, because the mean of its divisors is an integer number (12166191).

Almost surely, 2^40553965 is an apocalyptic number.

It is an amenable number.

40553965 is a deficient number, since it is larger than the sum of its proper divisors (8110799).

40553965 is an equidigital number, since it uses as much as digits as its factorization.

40553965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8110798.

The product of its (nonzero) digits is 81000, while the sum is 37.

The square root of 40553965 is about 6368.1995100656. The cubic root of 40553965 is about 343.5667347088.

The spelling of 40553965 in words is "forty million, five hundred fifty-three thousand, nine hundred sixty-five".