51532043521 has 16 divisors (see below), whose sum is σ = 60579750784. Its totient is φ = 42909554304.

The previous prime is 51532043503. The next prime is 51532043533. The reversal of 51532043521 is 12534023515.

It is a cyclic number.

It is not a de Polignac number, because 51532043521 - 2⁵ = 51532043489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51532043581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11821 + ... + 321253.

It is an arithmetic number, because the mean of its divisors is an integer number (3786234424).

Almost surely, 2^51532043521 is an apocalyptic number.

It is an amenable number.

51532043521 is a deficient number, since it is larger than the sum of its proper divisors (9047707263).

51532043521 is a wasteful number, since it uses less digits than its factorization.

51532043521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 310120.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 51532043521 in words is "fifty-one billion, five hundred thirty-two million, forty-three thousand, five hundred twenty-one".