55746220 has 24 divisors (see below), whose sum is σ = 117283824. Its totient is φ = 22257216.

The previous prime is 55746217. The next prime is 55746221. The reversal of 55746220 is 2264755.

It is not an unprimeable number, because it can be changed into a prime (55746221) 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, 9987 + ... + 14533.

It is an arithmetic number, because the mean of its divisors is an integer number (4886826).

Almost surely, 2^55746220 is an apocalyptic number.

It is an amenable number.

55746220 is an abundant number, since it is smaller than the sum of its proper divisors (61537604).

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

55746220 is a wasteful number, since it uses less digits than its factorization.

55746220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5169 (or 5167 counting only the distinct ones).

The product of its (nonzero) digits is 16800, while the sum is 31.

The square root of 55746220 is about 7466.3391297208. The cubic root of 55746220 is about 382.0074283800.

The spelling of 55746220 in words is "fifty-five million, seven hundred forty-six thousand, two hundred twenty".