55498728 has 32 divisors (see below), whose sum is σ = 141701760. Its totient is φ = 18105600.

The previous prime is 55498699. The next prime is 55498741. The reversal of 55498728 is 82789455.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23473 + ... + 25728.

It is an arithmetic number, because the mean of its divisors is an integer number (4428180).

Almost surely, 2^55498728 is an apocalyptic number.

It is an amenable number.

55498728 is an abundant number, since it is smaller than the sum of its proper divisors (86203032).

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

55498728 is a wasteful number, since it uses less digits than its factorization.

55498728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49257 (or 49253 counting only the distinct ones).

The product of its digits is 806400, while the sum is 48.

The square root of 55498728 is about 7449.7468413363. The cubic root of 55498728 is about 381.4412671743.

The spelling of 55498728 in words is "fifty-five million, four hundred ninety-eight thousand, seven hundred twenty-eight".