53005515531 has 8 divisors (see below), whose sum is σ = 70689952464. Its totient is φ = 35329044480.

The previous prime is 53005515523. The next prime is 53005515553. The reversal of 53005515531 is 13551550035.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53005515531 - 2³ = 53005515523 is a prime.

It is a super-2 number, since 2×53005515531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53005515492 and 53005515501.

It is not an unprimeable number, because it can be changed into a prime (53005515581) 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 7 ways as a sum of consecutive naturals, for example, 1975926 + ... + 2002571.

It is an arithmetic number, because the mean of its divisors is an integer number (8836244058).

Almost surely, 2^53005515531 is an apocalyptic number.

53005515531 is a deficient number, since it is larger than the sum of its proper divisors (17684436933).

53005515531 is a wasteful number, since it uses less digits than its factorization.

53005515531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3982941.

The product of its (nonzero) digits is 28125, while the sum is 33.

The spelling of 53005515531 in words is "fifty-three billion, five million, five hundred fifteen thousand, five hundred thirty-one".