51369959 has 2 divisors, whose sum is σ = 51369960. Its totient is φ = 51369958.

The previous prime is 51369953. The next prime is 51369961. The reversal of 51369959 is 95996315.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51369959 - 2¹⁶ = 51304423 is a prime.

Together with 51369961, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (51369953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25684979 + 25684980.

It is an arithmetic number, because the mean of its divisors is an integer number (25684980).

Almost surely, 2^51369959 is an apocalyptic number.

51369959 is a deficient number, since it is larger than the sum of its proper divisors (1).

51369959 is an equidigital number, since it uses as much as digits as its factorization.

51369959 is an evil number, because the sum of its binary digits is even.

The product of its digits is 328050, while the sum is 47.

The square root of 51369959 is about 7167.2839346575. The cubic root of 51369959 is about 371.7375277850.

The spelling of 51369959 in words is "fifty-one million, three hundred sixty-nine thousand, nine hundred fifty-nine".