51356973 has 8 divisors (see below), whose sum is σ = 68511168. Its totient is φ = 34220384.

The previous prime is 51356971. The next prime is 51356989. The reversal of 51356973 is 37965315.

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 51356973 - 2¹ = 51356971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51356971) 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, 5761 + ... + 11657.

It is an arithmetic number, because the mean of its divisors is an integer number (8563896).

Almost surely, 2^51356973 is an apocalyptic number.

It is an amenable number.

51356973 is a deficient number, since it is larger than the sum of its proper divisors (17154195).

51356973 is a wasteful number, since it uses less digits than its factorization.

51356973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8803.

The product of its digits is 85050, while the sum is 39.

The square root of 51356973 is about 7166.3779554249. The cubic root of 51356973 is about 371.7062008482.

The spelling of 51356973 in words is "fifty-one million, three hundred fifty-six thousand, nine hundred seventy-three".