51736331 has 4 divisors (see below), whose sum is σ = 52837152. Its totient is φ = 50635512.

The previous prime is 51736327. The next prime is 51736343. The reversal of 51736331 is 13363715.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 51736331 - 2² = 51736327 is a prime.

It is a super-2 number, since 2×51736331² = 5353295890683122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51736294 and 51736303.

It is not an unprimeable number, because it can be changed into a prime (51736381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550340 + ... + 550433.

It is an arithmetic number, because the mean of its divisors is an integer number (13209288).

Almost surely, 2^51736331 is an apocalyptic number.

51736331 is a deficient number, since it is larger than the sum of its proper divisors (1100821).

51736331 is a wasteful number, since it uses less digits than its factorization.

51736331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100820.

The product of its digits is 5670, while the sum is 29.

The square root of 51736331 is about 7192.7971610494. The cubic root of 51736331 is about 372.6191826189.

The spelling of 51736331 in words is "fifty-one million, seven hundred thirty-six thousand, three hundred thirty-one".