51252112535 has 16 divisors (see below), whose sum is σ = 66291040704. Its totient is φ = 37814833152.

The previous prime is 51252112531. The next prime is 51252112573. The reversal of 51252112535 is 53521125215.

It is a cyclic number.

It is not a de Polignac number, because 51252112535 - 2² = 51252112531 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51252112531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266987 + ... + 416876.

It is an arithmetic number, because the mean of its divisors is an integer number (4143190044).

Almost surely, 2^51252112535 is an apocalyptic number.

51252112535 is a deficient number, since it is larger than the sum of its proper divisors (15038928169).

51252112535 is a wasteful number, since it uses less digits than its factorization.

51252112535 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685034.

The product of its digits is 15000, while the sum is 32.

The spelling of 51252112535 in words is "fifty-one billion, two hundred fifty-two million, one hundred twelve thousand, five hundred thirty-five".