55360020 has 24 divisors (see below), whose sum is σ = 155008224. Its totient is φ = 14762656.

The previous prime is 55359991. The next prime is 55360021. The reversal of 55360020 is 2006355.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55360021) 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, 461274 + ... + 461393.

It is an arithmetic number, because the mean of its divisors is an integer number (6458676).

Almost surely, 2^55360020 is an apocalyptic number.

It is an amenable number.

55360020 is an abundant number, since it is smaller than the sum of its proper divisors (99648204).

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

55360020 is a wasteful number, since it uses less digits than its factorization.

55360020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 922679 (or 922677 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 55360020 is about 7440.4314391035. The cubic root of 55360020 is about 381.1232232782.

Adding to 55360020 its reverse (2006355), we get a palindrome (57366375).

The spelling of 55360020 in words is "fifty-five million, three hundred sixty thousand, twenty".