51523332531 has 16 divisors (see below), whose sum is σ = 77527272960. Its totient is φ = 30149493920.

The previous prime is 51523332529. The next prime is 51523332547. The reversal of 51523332531 is 13523332515.

It is a cyclic number.

It is not a de Polignac number, because 51523332531 - 2¹ = 51523332529 is a prime.

It is a super-2 number, since 2×51523332531² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 51523332492 and 51523332501.

It is not an unprimeable number, because it can be changed into a prime (51523332551) 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, 26918235 + ... + 26920148.

It is an arithmetic number, because the mean of its divisors is an integer number (4845454560).

Almost surely, 2^51523332531 is an apocalyptic number.

51523332531 is a deficient number, since it is larger than the sum of its proper divisors (26003940429).

51523332531 is a wasteful number, since it uses less digits than its factorization.

51523332531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53838426.

The product of its digits is 40500, while the sum is 33.

The spelling of 51523332531 in words is "fifty-one billion, five hundred twenty-three million, three hundred thirty-two thousand, five hundred thirty-one".