55939519 has 8 divisors (see below), whose sum is σ = 58446720. Its totient is φ = 53438616.

The previous prime is 55939511. The next prime is 55939561. The reversal of 55939519 is 91593955.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55939519 - 2³ = 55939511 is a prime.

It is a super-2 number, since 2×55939519² = 6258459571902722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55939511) 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, 32724 + ... + 34390.

It is an arithmetic number, because the mean of its divisors is an integer number (7305840).

Almost surely, 2^55939519 is an apocalyptic number.

55939519 is a deficient number, since it is larger than the sum of its proper divisors (2507201).

55939519 is a wasteful number, since it uses less digits than its factorization.

55939519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3149.

The product of its digits is 273375, while the sum is 46.

The square root of 55939519 is about 7479.2726250619. The cubic root of 55939519 is about 382.4484536174.

The spelling of 55939519 in words is "fifty-five million, nine hundred thirty-nine thousand, five hundred nineteen".