51879911 has 2 divisors, whose sum is σ = 51879912. Its totient is φ = 51879910.

The previous prime is 51879889. The next prime is 51879917. The reversal of 51879911 is 11997815.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51879911 - 2⁶ = 51879847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51879917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25939955 + 25939956.

It is an arithmetic number, because the mean of its divisors is an integer number (25939956).

Almost surely, 2^51879911 is an apocalyptic number.

51879911 is a deficient number, since it is larger than the sum of its proper divisors (1).

51879911 is an equidigital number, since it uses as much as digits as its factorization.

51879911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 22680, while the sum is 41.

The square root of 51879911 is about 7202.7710639725. The cubic root of 51879911 is about 372.9635650237.

The spelling of 51879911 in words is "fifty-one million, eight hundred seventy-nine thousand, nine hundred eleven".