53603640 has 64 divisors (see below), whose sum is σ = 178682400. Its totient is φ = 14294016.

The previous prime is 53603623. The next prime is 53603647. The reversal of 53603640 is 4630635.

53603640 is a `hidden beast` number, since 53 + 603 + 6 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53603647) 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, 23737 + ... + 25896.

Almost surely, 2^53603640 is an apocalyptic number.

It is an amenable number.

53603640 is an abundant number, since it is smaller than the sum of its proper divisors (125078760).

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

53603640 is a wasteful number, since it uses less digits than its factorization.

53603640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49653 (or 49643 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 27.

The square root of 53603640 is about 7321.4506759248. The cubic root of 53603640 is about 377.0492610125.

The spelling of 53603640 in words is "fifty-three million, six hundred three thousand, six hundred forty".