51975537 has 4 divisors (see below), whose sum is σ = 69300720. Its totient is φ = 34650356.

The previous prime is 51975533. The next prime is 51975541. The reversal of 51975537 is 73557915.

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 an interprime number because it is at equal distance from previous prime (51975533) and next prime (51975541).

It is a cyclic number.

It is not a de Polignac number, because 51975537 - 2² = 51975533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51975533) 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, 8662587 + ... + 8662592.

It is an arithmetic number, because the mean of its divisors is an integer number (17325180).

Almost surely, 2^51975537 is an apocalyptic number.

It is an amenable number.

51975537 is a deficient number, since it is larger than the sum of its proper divisors (17325183).

51975537 is a wasteful number, since it uses less digits than its factorization.

51975537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17325182.

The product of its digits is 165375, while the sum is 42.

The square root of 51975537 is about 7209.4061475270. The cubic root of 51975537 is about 373.1925754621.

The spelling of 51975537 in words is "fifty-one million, nine hundred seventy-five thousand, five hundred thirty-seven".