51164489 has 8 divisors (see below), whose sum is σ = 53460672. Its totient is φ = 48874320.

The previous prime is 51164471. The next prime is 51164521. The reversal of 51164489 is 98446115.

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 51164489 - 2¹⁶ = 51098953 is a prime.

It is a super-2 number, since 2×51164489² = 5235609869262242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51164089) 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, 32654 + ... + 34184.

It is an arithmetic number, because the mean of its divisors is an integer number (6682584).

Almost surely, 2^51164489 is an apocalyptic number.

It is an amenable number.

51164489 is a deficient number, since it is larger than the sum of its proper divisors (2296183).

51164489 is a wasteful number, since it uses less digits than its factorization.

51164489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3007.

The product of its digits is 34560, while the sum is 38.

The square root of 51164489 is about 7152.9356910292. The cubic root of 51164489 is about 371.2412391982.

The spelling of 51164489 in words is "fifty-one million, one hundred sixty-four thousand, four hundred eighty-nine".