51902879 has 4 divisors (see below), whose sum is σ = 59317584. Its totient is φ = 44488176.

The previous prime is 51902867. The next prime is 51902909. The reversal of 51902879 is 97820915.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51902879 - 2¹⁶ = 51837343 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 (51902579) 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, 3707342 + ... + 3707355.

It is an arithmetic number, because the mean of its divisors is an integer number (14829396).

Almost surely, 2^51902879 is an apocalyptic number.

51902879 is a deficient number, since it is larger than the sum of its proper divisors (7414705).

51902879 is an equidigital number, since it uses as much as digits as its factorization.

51902879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7414704.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 51902879 is about 7204.3652739155. The cubic root of 51902879 is about 373.0185957230.

The spelling of 51902879 in words is "fifty-one million, nine hundred two thousand, eight hundred seventy-nine".