51160431 has 8 divisors (see below), whose sum is σ = 77958784. Its totient is φ = 29234520.

The previous prime is 51160427. The next prime is 51160469. The reversal of 51160431 is 13406115.

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

It is not a de Polignac number, because 51160431 - 2² = 51160427 is a prime.

It is a super-2 number, since 2×51160431² = 5234779400211522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 2436211 = 51160431 / (5 + 1 + 1 + 6 + 0 + 4 + 3 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51160398 and 51160407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51160471) 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, 1218085 + ... + 1218126.

It is an arithmetic number, because the mean of its divisors is an integer number (9744848).

Almost surely, 2^51160431 is an apocalyptic number.

51160431 is a deficient number, since it is larger than the sum of its proper divisors (26798353).

51160431 is a wasteful number, since it uses less digits than its factorization.

51160431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2436221.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 51160431 is about 7152.6520256475. The cubic root of 51160431 is about 371.2314242086.

Adding to 51160431 its reverse (13406115), we get a palindrome (64566546).

The spelling of 51160431 in words is "fifty-one million, one hundred sixty thousand, four hundred thirty-one".