51887879 has 8 divisors (see below), whose sum is σ = 54725040. Its totient is φ = 49061376.

The previous prime is 51887867. The next prime is 51887897. The reversal of 51887879 is 97878815.

It is a happy number.

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 51887879 - 2¹⁶ = 51822343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51887879.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51887809) 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, 8597 + ... + 13329.

It is an arithmetic number, because the mean of its divisors is an integer number (6840630).

Almost surely, 2^51887879 is an apocalyptic number.

51887879 is a deficient number, since it is larger than the sum of its proper divisors (2837161).

51887879 is a wasteful number, since it uses less digits than its factorization.

51887879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329.

The product of its digits is 1128960, while the sum is 53.

The square root of 51887879 is about 7203.3241631902. The cubic root of 51887879 is about 372.9826579732.

The spelling of 51887879 in words is "fifty-one million, eight hundred eighty-seven thousand, eight hundred seventy-nine".