51064873 has 4 divisors (see below), whose sum is σ = 51089920. Its totient is φ = 51039828.

The previous prime is 51064861. The next prime is 51064903. The reversal of 51064873 is 37846015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51064873 - 2⁵ = 51064841 is a prime.

It is a super-2 number, since 2×51064873² = 5215242509012258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51067873) 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, 9165 + ... + 13642.

It is an arithmetic number, because the mean of its divisors is an integer number (12772480).

Almost surely, 2^51064873 is an apocalyptic number.

It is an amenable number.

51064873 is a deficient number, since it is larger than the sum of its proper divisors (25047).

51064873 is a wasteful number, since it uses less digits than its factorization.

51064873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25046.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 51064873 is about 7145.9690035712. The cubic root of 51064873 is about 371.0001501490. Note that the first 3 decimals are identical.

The spelling of 51064873 in words is "fifty-one million, sixty-four thousand, eight hundred seventy-three".