51003995 has 32 divisors (see below), whose sum is σ = 77303808. Its totient is φ = 31477248.

The previous prime is 51003989. The next prime is 51004001. The reversal of 51003995 is 59930015.

It is an interprime number because it is at equal distance from previous prime (51003989) and next prime (51004001).

It is not a de Polignac number, because 51003995 - 2⁸ = 51003739 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11822 + ... + 15548.

It is an arithmetic number, because the mean of its divisors is an integer number (2415744).

Almost surely, 2^51003995 is an apocalyptic number.

51003995 is a deficient number, since it is larger than the sum of its proper divisors (26299813).

51003995 is a wasteful number, since it uses less digits than its factorization.

51003995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3779.

The product of its (nonzero) digits is 6075, while the sum is 32.

The square root of 51003995 is about 7141.7081290123. The cubic root of 51003995 is about 370.8526597960.

The spelling of 51003995 in words is "fifty-one million, three thousand, nine hundred ninety-five".