51864253 has 8 divisors (see below), whose sum is σ = 59417600. Its totient is φ = 44346960.

The previous prime is 51864247. The next prime is 51864257. The reversal of 51864253 is 35246815.

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

It is a de Polignac number, because none of the positive numbers 2^k-51864253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51864257) 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, 5853 + ... + 11746.

It is an arithmetic number, because the mean of its divisors is an integer number (7427200).

Almost surely, 2^51864253 is an apocalyptic number.

It is an amenable number.

51864253 is a deficient number, since it is larger than the sum of its proper divisors (7553347).

51864253 is a wasteful number, since it uses less digits than its factorization.

51864253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18027.

The product of its digits is 28800, while the sum is 34.

The square root of 51864253 is about 7201.6840391675. The cubic root of 51864253 is about 372.9260395731.

The spelling of 51864253 in words is "fifty-one million, eight hundred sixty-four thousand, two hundred fifty-three".