55989739 has 8 divisors (see below), whose sum is σ = 60497360. Its totient is φ = 51510816.

The previous prime is 55989727. The next prime is 55989757. The reversal of 55989739 is 93798955.

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 55989739 - 2⁷ = 55989611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55989739.

It is not an unprimeable number, because it can be changed into a prime (55989779) 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, 3024 + ... + 11005.

It is an arithmetic number, because the mean of its divisors is an integer number (7562170).

Almost surely, 2^55989739 is an apocalyptic number.

55989739 is a deficient number, since it is larger than the sum of its proper divisors (4507621).

55989739 is a wasteful number, since it uses less digits than its factorization.

55989739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14349.

The product of its digits is 3061800, while the sum is 55.

The square root of 55989739 is about 7482.6291502386. The cubic root of 55989739 is about 382.5628677618.

The spelling of 55989739 in words is "fifty-five million, nine hundred eighty-nine thousand, seven hundred thirty-nine".