51790331 has 4 divisors (see below), whose sum is σ = 51811200. Its totient is φ = 51769464.

The previous prime is 51790307. The next prime is 51790351. The reversal of 51790331 is 13309715.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13309715 = 5 ⋅2661943.

It is a cyclic number.

It is not a de Polignac number, because 51790331 - 2¹⁴ = 51773947 is a prime.

It is a super-2 number, since 2×51790331² = 5364476770179122, 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 = 51790294 and 51790303.

It is not an unprimeable number, because it can be changed into a prime (51790351) 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, 6116 + ... + 11873.

It is an arithmetic number, because the mean of its divisors is an integer number (12952800).

Almost surely, 2^51790331 is an apocalyptic number.

51790331 is a deficient number, since it is larger than the sum of its proper divisors (20869).

51790331 is a wasteful number, since it uses less digits than its factorization.

51790331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20868.

The product of its (nonzero) digits is 2835, while the sum is 29.

The square root of 51790331 is about 7196.5499372963. The cubic root of 51790331 is about 372.7487784556.

The spelling of 51790331 in words is "fifty-one million, seven hundred ninety thousand, three hundred thirty-one".