55519630 has 16 divisors (see below), whose sum is σ = 103381920. Its totient is φ = 21441952.

The previous prime is 55519621. The next prime is 55519669. The reversal of 55519630 is 3691555.

It is a congruent number.

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, 95434 + ... + 96013.

It is an arithmetic number, because the mean of its divisors is an integer number (6461370).

Almost surely, 2^55519630 is an apocalyptic number.

55519630 is a deficient number, since it is larger than the sum of its proper divisors (47862290).

55519630 is a wasteful number, since it uses less digits than its factorization.

55519630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191483.

The product of its (nonzero) digits is 20250, while the sum is 34.

The square root of 55519630 is about 7451.1495757366. The cubic root of 55519630 is about 381.4891474588.

The spelling of 55519630 in words is "fifty-five million, five hundred nineteen thousand, six hundred thirty".