51416731 has 8 divisors (see below), whose sum is σ = 53504064. Its totient is φ = 49370880.

The previous prime is 51416723. The next prime is 51416741. The reversal of 51416731 is 13761415.

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 51416731 - 2³ = 51416723 is a prime.

It is a super-2 number, since 2×51416731² = 5287360453452722, which contains 22 as substring.

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 51416731.

It is not an unprimeable number, because it can be changed into a prime (51416711) 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, 7830 + ... + 12811.

It is an arithmetic number, because the mean of its divisors is an integer number (6688008).

Almost surely, 2^51416731 is an apocalyptic number.

51416731 is a deficient number, since it is larger than the sum of its proper divisors (2087333).

51416731 is a wasteful number, since it uses less digits than its factorization.

51416731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20741.

The product of its digits is 2520, while the sum is 28.

The square root of 51416731 is about 7170.5460740448. The cubic root of 51416731 is about 371.8503150623.

The spelling of 51416731 in words is "fifty-one million, four hundred sixteen thousand, seven hundred thirty-one".