55439079 has 12 divisors (see below), whose sum is σ = 74790696. Its totient is φ = 36528448.

The previous prime is 55439063. The next prime is 55439081. The reversal of 55439079 is 97093455.

It is not a de Polignac number, because 55439079 - 2⁴ = 55439063 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55439079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55439009) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22597 + ... + 24929.

It is an arithmetic number, because the mean of its divisors is an integer number (6232558).

Almost surely, 2^55439079 is an apocalyptic number.

55439079 is a deficient number, since it is larger than the sum of its proper divisors (19351617).

55439079 is an equidigital number, since it uses as much as digits as its factorization.

55439079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2514 (or 2425 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 42.

The square root of 55439079 is about 7445.7423404252. The cubic root of 55439079 is about 381.3045628618.

The spelling of 55439079 in words is "fifty-five million, four hundred thirty-nine thousand, seventy-nine".