40640552 has 8 divisors (see below), whose sum is σ = 76201050. Its totient is φ = 20320272.

The previous prime is 40640543. The next prime is 40640569. The reversal of 40640552 is 25504604.

It can be written as a sum of positive squares in only one way, i.e., 32878756 + 7761796 = 5734^2 + 2786^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2540027 + ... + 2540042.

Almost surely, 2^40640552 is an apocalyptic number.

It is an amenable number.

40640552 is a deficient number, since it is larger than the sum of its proper divisors (35560498).

40640552 is a wasteful number, since it uses less digits than its factorization.

40640552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5080075 (or 5080071 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 40640552 is about 6374.9942745072. The cubic root of 40640552 is about 343.8110779844.

The spelling of 40640552 in words is "forty million, six hundred forty thousand, five hundred fifty-two".