51864933 has 8 divisors (see below), whose sum is σ = 69799968. Its totient is φ = 34253264.

The previous prime is 51864893. The next prime is 51864941. The reversal of 51864933 is 33946815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51864933 - 2⁸ = 51864677 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 51864891 and 51864900.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51864973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80466 + ... + 81107.

It is an arithmetic number, because the mean of its divisors is an integer number (8724996).

Almost surely, 2^51864933 is an apocalyptic number.

It is an amenable number.

51864933 is a deficient number, since it is larger than the sum of its proper divisors (17935035).

51864933 is a wasteful number, since it uses less digits than its factorization.

51864933 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161683.

The product of its digits is 77760, while the sum is 39.

The square root of 51864933 is about 7201.7312501926. The cubic root of 51864933 is about 372.9276693958.

The spelling of 51864933 in words is "fifty-one million, eight hundred sixty-four thousand, nine hundred thirty-three".