51972599 has 8 divisors (see below), whose sum is σ = 60149760. Its totient is φ = 43983576.

The previous prime is 51972593. The next prime is 51972601. The reversal of 51972599 is 99527915.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51972599 - 2¹² = 51968503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51972593) 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, 46439 + ... + 47544.

It is an arithmetic number, because the mean of its divisors is an integer number (7518720).

Almost surely, 2^51972599 is an apocalyptic number.

51972599 is a deficient number, since it is larger than the sum of its proper divisors (8177161).

51972599 is an equidigital number, since it uses as much as digits as its factorization.

51972599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94069.

The product of its digits is 255150, while the sum is 47.

The square root of 51972599 is about 7209.2023830657. The cubic root of 51972599 is about 373.1855435614.

It can be divided in two parts, 5197 and 2599, that multiplied together give a triangular number (13507003 = T₅₁₉₇).

The spelling of 51972599 in words is "fifty-one million, nine hundred seventy-two thousand, five hundred ninety-nine".