63557238 has 16 divisors (see below), whose sum is σ = 128724480. Its totient is φ = 20917416.

The previous prime is 63557227. The next prime is 63557239. The reversal of 63557238 is 83275536.

It is a junction number, because it is equal to n+sod(n) for n = 63557196 and 63557205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63557239) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66570 + ... + 67517.

It is an arithmetic number, because the mean of its divisors is an integer number (8045280).

Almost surely, 2^63557238 is an apocalyptic number.

63557238 is an abundant number, since it is smaller than the sum of its proper divisors (65167242).

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

63557238 is a wasteful number, since it uses less digits than its factorization.

63557238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134171.

The product of its digits is 151200, while the sum is 39.

The square root of 63557238 is about 7972.2793478402. The cubic root of 63557238 is about 399.0754438028.

The spelling of 63557238 in words is "sixty-three million, five hundred fifty-seven thousand, two hundred thirty-eight".