53015023221 has 32 divisors (see below), whose sum is σ = 74883346560. Its totient is φ = 33310228224.

The previous prime is 53015023213. The next prime is 53015023247. The reversal of 53015023221 is 12232051035.

It is a happy number.

It is not a de Polignac number, because 53015023221 - 2³ = 53015023213 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53015023191 and 53015023200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53015023211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 879186 + ... + 937548.

It is an arithmetic number, because the mean of its divisors is an integer number (2340104580).

Almost surely, 2^53015023221 is an apocalyptic number.

It is an amenable number.

53015023221 is a deficient number, since it is larger than the sum of its proper divisors (21868323339).

53015023221 is a wasteful number, since it uses less digits than its factorization.

53015023221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58645.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 53015023221 its reverse (12232051035), we get a palindrome (65247074256).

The spelling of 53015023221 in words is "fifty-three billion, fifteen million, twenty-three thousand, two hundred twenty-one".