51233885 has 4 divisors (see below), whose sum is σ = 61480668. Its totient is φ = 40987104.

The previous prime is 51233873. The next prime is 51233891. The reversal of 51233885 is 58833215.

51233885 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19175641 + 32058244 = 4379^2 + 5662^2 .

It is a cyclic number.

It is not a de Polignac number, because 51233885 - 2⁸ = 51233629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5123384 + ... + 5123393.

It is an arithmetic number, because the mean of its divisors is an integer number (15370167).

Almost surely, 2^51233885 is an apocalyptic number.

It is an amenable number.

51233885 is a deficient number, since it is larger than the sum of its proper divisors (10246783).

51233885 is a wasteful number, since it uses less digits than its factorization.

51233885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10246782.

The product of its digits is 28800, while the sum is 35.

The square root of 51233885 is about 7157.7849227257. The cubic root of 51233885 is about 371.4090054148.

The spelling of 51233885 in words is "fifty-one million, two hundred thirty-three thousand, eight hundred eighty-five".