51879469 has 2 divisors, whose sum is σ = 51879470. Its totient is φ = 51879468.

The previous prime is 51879433. The next prime is 51879479. The reversal of 51879469 is 96497815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51294244 + 585225 = 7162^2 + 765^2 .

It is a cyclic number.

It is not a de Polignac number, because 51879469 - 2¹⁵ = 51846701 is a prime.

It is a super-2 number, since 2×51879469² = 5382958607443922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51879419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25939734 + 25939735.

It is an arithmetic number, because the mean of its divisors is an integer number (25939735).

Almost surely, 2^51879469 is an apocalyptic number.

It is an amenable number.

51879469 is a deficient number, since it is larger than the sum of its proper divisors (1).

51879469 is an equidigital number, since it uses as much as digits as its factorization.

51879469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 49.

The square root of 51879469 is about 7202.7403812716. The cubic root of 51879469 is about 372.9625058446.

The spelling of 51879469 in words is "fifty-one million, eight hundred seventy-nine thousand, four hundred sixty-nine".