53617940 has 12 divisors (see below), whose sum is σ = 112597716. Its totient is φ = 21447168.

The previous prime is 53617939. The next prime is 53617979. The reversal of 53617940 is 4971635.

It can be written as a sum of positive squares in 2 ways, for example, as 38887696 + 14730244 = 6236^2 + 3838^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53617940.

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, 1340429 + ... + 1340468.

It is an arithmetic number, because the mean of its divisors is an integer number (9383143).

Almost surely, 2^53617940 is an apocalyptic number.

It is an amenable number.

53617940 is an abundant number, since it is smaller than the sum of its proper divisors (58979776).

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

53617940 is a wasteful number, since it uses less digits than its factorization.

53617940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680906 (or 2680904 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 53617940 is about 7322.4271932195. The cubic root of 53617940 is about 377.0827868766.

The spelling of 53617940 in words is "fifty-three million, six hundred seventeen thousand, nine hundred forty".