51330039 has 16 divisors (see below), whose sum is σ = 72324480. Its totient is φ = 32292000.

The previous prime is 51330031. The next prime is 51330049. The reversal of 51330039 is 93003315.

It is not a de Polignac number, because 51330039 - 2³ = 51330031 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51330031) 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, 14164 + ... + 17414.

It is an arithmetic number, because the mean of its divisors is an integer number (4520280).

Almost surely, 2^51330039 is an apocalyptic number.

51330039 is a deficient number, since it is larger than the sum of its proper divisors (20994441).

51330039 is a wasteful number, since it uses less digits than its factorization.

51330039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3550.

The product of its (nonzero) digits is 1215, while the sum is 24.

The square root of 51330039 is about 7164.4985169934. The cubic root of 51330039 is about 371.6412094432.

The spelling of 51330039 in words is "fifty-one million, three hundred thirty thousand, thirty-nine".