51403683 has 8 divisors (see below), whose sum is σ = 72145600. Its totient is φ = 32465448.

The previous prime is 51403669. The next prime is 51403687. The reversal of 51403683 is 38630415.

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

It is not a de Polignac number, because 51403683 - 2²¹ = 49306531 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51403683.

It is not an unprimeable number, because it can be changed into a prime (51403687) 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, 450853 + ... + 450966.

It is an arithmetic number, because the mean of its divisors is an integer number (9018200).

Almost surely, 2^51403683 is an apocalyptic number.

51403683 is a deficient number, since it is larger than the sum of its proper divisors (20741917).

51403683 is a wasteful number, since it uses less digits than its factorization.

51403683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901841.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 51403683 is about 7169.6361832383. The cubic root of 51403683 is about 371.8188576404.

The spelling of 51403683 in words is "fifty-one million, four hundred three thousand, six hundred eighty-three".