63557240 has 16 divisors (see below), whose sum is σ = 143003880. Its totient is φ = 25422880.

The previous prime is 63557239. The next prime is 63557269. The reversal of 63557240 is 4275536.

It is a junction number, because it is equal to n+sod(n) for n = 63557197 and 63557206.

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, 794426 + ... + 794505.

Almost surely, 2^63557240 is an apocalyptic number.

It is an amenable number.

63557240 is an abundant number, since it is smaller than the sum of its proper divisors (79446640).

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

63557240 is a wasteful number, since it uses less digits than its factorization.

63557240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1588942 (or 1588938 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 32.

The square root of 63557240 is about 7972.2794732749. The cubic root of 63557240 is about 399.0754479887.

It can be divided in two parts, 635 and 57240, that added together give a palindrome (57875).

The spelling of 63557240 in words is "sixty-three million, five hundred fifty-seven thousand, two hundred forty".