51920673 has 16 divisors (see below), whose sum is σ = 83281920. Its totient is φ = 28107216.

The previous prime is 51920653. The next prime is 51920677. The reversal of 51920673 is 37602915.

It is not a de Polignac number, because 51920673 - 2⁸ = 51920417 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51920677) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64665 + ... + 65462.

It is an arithmetic number, because the mean of its divisors is an integer number (5205120).

Almost surely, 2^51920673 is an apocalyptic number.

It is an amenable number.

51920673 is a deficient number, since it is larger than the sum of its proper divisors (31361247).

51920673 is a wasteful number, since it uses less digits than its factorization.

51920673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130156.

The product of its (nonzero) digits is 11340, while the sum is 33.

The square root of 51920673 is about 7205.6001138004. The cubic root of 51920673 is about 373.0612185001.

The spelling of 51920673 in words is "fifty-one million, nine hundred twenty thousand, six hundred seventy-three".