51535339 has 4 divisors (see below), whose sum is σ = 52928224. Its totient is φ = 50142456.

The previous prime is 51535321. The next prime is 51535343. The reversal of 51535339 is 93353515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51535339 - 2⁵ = 51535307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51535369) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696387 + ... + 696460.

It is an arithmetic number, because the mean of its divisors is an integer number (13232056).

Almost surely, 2^51535339 is an apocalyptic number.

51535339 is a deficient number, since it is larger than the sum of its proper divisors (1392885).

51535339 is a wasteful number, since it uses less digits than its factorization.

51535339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392884.

The product of its digits is 30375, while the sum is 34.

The square root of 51535339 is about 7178.8118097635. The cubic root of 51535339 is about 372.1360233092.

The spelling of 51535339 in words is "fifty-one million, five hundred thirty-five thousand, three hundred thirty-nine".