51972337 has 16 divisors (see below), whose sum is σ = 55508992. Its totient is φ = 48580560.

The previous prime is 51972329. The next prime is 51972367. The reversal of 51972337 is 73327915.

It is a cyclic number.

It is not a de Polignac number, because 51972337 - 2³ = 51972329 is a prime.

It is a super-2 number, since 2×51972337² = 5402247626483138, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51972296 and 51972305.

It is not an unprimeable number, because it can be changed into a prime (51972367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169138 + ... + 169444.

It is an arithmetic number, because the mean of its divisors is an integer number (3469312).

Almost surely, 2^51972337 is an apocalyptic number.

It is an amenable number.

51972337 is a deficient number, since it is larger than the sum of its proper divisors (3536655).

51972337 is a wasteful number, since it uses less digits than its factorization.

51972337 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508.

The product of its digits is 39690, while the sum is 37.

The square root of 51972337 is about 7209.1842118231. The cubic root of 51972337 is about 373.1849164696.

The spelling of 51972337 in words is "fifty-one million, nine hundred seventy-two thousand, three hundred thirty-seven".