55020039 has 16 divisors (see below), whose sum is σ = 74738400. Its totient is φ = 35997696.

The previous prime is 55020023. The next prime is 55020061. The reversal of 55020039 is 93002055.

It is not a de Polignac number, because 55020039 - 2⁴ = 55020023 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55020089) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36207 + ... + 37695.

It is an arithmetic number, because the mean of its divisors is an integer number (4671150).

Almost surely, 2^55020039 is an apocalyptic number.

55020039 is a deficient number, since it is larger than the sum of its proper divisors (19718361).

55020039 is a wasteful number, since it uses less digits than its factorization.

55020039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1714.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 55020039 is about 7417.5493931621. The cubic root of 55020039 is about 380.3414267495.

The spelling of 55020039 in words is "fifty-five million, twenty thousand, thirty-nine".