51293899 has 2 divisors, whose sum is σ = 51293900. Its totient is φ = 51293898.

The previous prime is 51293881. The next prime is 51293909. The reversal of 51293899 is 99839215.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 51293899 - 2⁹ = 51293387 is a prime.

It is not a weakly prime, because it can be changed into another prime (51293819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25646949 + 25646950.

It is an arithmetic number, because the mean of its divisors is an integer number (25646950).

Almost surely, 2^51293899 is an apocalyptic number.

51293899 is a deficient number, since it is larger than the sum of its proper divisors (1).

51293899 is an equidigital number, since it uses as much as digits as its factorization.

51293899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 46.

The square root of 51293899 is about 7161.9759145085. The cubic root of 51293899 is about 371.5539683465.

The spelling of 51293899 in words is "fifty-one million, two hundred ninety-three thousand, eight hundred ninety-nine".