55030518 has 24 divisors (see below), whose sum is σ = 123080256. Its totient is φ = 17751600.

The previous prime is 55030501. The next prime is 55030523. The reversal of 55030518 is 81503055.

It is a super-2 number, since 2×55030518² = 6056715822696648, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55030491 and 55030500.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48753 + ... + 49868.

It is an arithmetic number, because the mean of its divisors is an integer number (5128344).

Almost surely, 2^55030518 is an apocalyptic number.

55030518 is an abundant number, since it is smaller than the sum of its proper divisors (68049738).

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

55030518 is a wasteful number, since it uses less digits than its factorization.

55030518 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98660 (or 98657 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 55030518 is about 7418.2557248992. The cubic root of 55030518 is about 380.3655715573.

The spelling of 55030518 in words is "fifty-five million, thirty thousand, five hundred eighteen".