53531556 has 48 divisors (see below), whose sum is σ = 135004800. Its totient is φ = 16411392.

The previous prime is 53531551. The next prime is 53531579. The reversal of 53531556 is 65513535.

It is a super-2 number, since 2×53531556² = 5731254975562272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53531551) 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, 63385 + ... + 64223.

It is an arithmetic number, because the mean of its divisors is an integer number (2812600).

Almost surely, 2^53531556 is an apocalyptic number.

It is an amenable number.

53531556 is an abundant number, since it is smaller than the sum of its proper divisors (81473244).

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

53531556 is a wasteful number, since it uses less digits than its factorization.

53531556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1268 (or 1266 counting only the distinct ones).

The product of its digits is 33750, while the sum is 33.

The square root of 53531556 is about 7316.5262249240. The cubic root of 53531556 is about 376.8801716795.

The spelling of 53531556 in words is "fifty-three million, five hundred thirty-one thousand, five hundred fifty-six".