55755420 has 48 divisors (see below), whose sum is σ = 178418688. Its totient is φ = 12744000.

The previous prime is 55755419. The next prime is 55755433. The reversal of 55755420 is 2455755.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65956 + ... + 66795.

It is an arithmetic number, because the mean of its divisors is an integer number (3717056).

Almost surely, 2^55755420 is an apocalyptic number.

It is an amenable number.

55755420 is an abundant number, since it is smaller than the sum of its proper divisors (122663268).

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

55755420 is a wasteful number, since it uses less digits than its factorization.

55755420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132770 (or 132768 counting only the distinct ones).

The product of its (nonzero) digits is 35000, while the sum is 33.

The square root of 55755420 is about 7466.9552027584. The cubic root of 55755420 is about 382.0284419125.

The spelling of 55755420 in words is "fifty-five million, seven hundred fifty-five thousand, four hundred twenty".