55213560 has 48 divisors (see below), whose sum is σ = 179445240. Its totient is φ = 14723520.

The previous prime is 55213549. The next prime is 55213567. The reversal of 55213560 is 6531255.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55213567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 76326 + ... + 77045.

Almost surely, 2^55213560 is an apocalyptic number.

It is an amenable number.

55213560 is an abundant number, since it is smaller than the sum of its proper divisors (124231680).

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

55213560 is a wasteful number, since it uses less digits than its factorization.

55213560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153388 (or 153381 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 55213560 is about 7430.5827496906. The cubic root of 55213560 is about 380.7868276580.

The spelling of 55213560 in words is "fifty-five million, two hundred thirteen thousand, five hundred sixty".