53110111521 has 8 divisors (see below), whose sum is σ = 70817091840. Its totient is φ = 35404936112.

The previous prime is 53110111499. The next prime is 53110111541. The reversal of 53110111521 is 12511101135.

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

It is a cyclic number.

It is not a de Polignac number, because 53110111521 - 2²² = 53105917217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53110111541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381006 + ... + 501383.

It is an arithmetic number, because the mean of its divisors is an integer number (8852136480).

Almost surely, 2^53110111521 is an apocalyptic number.

It is an amenable number.

53110111521 is a deficient number, since it is larger than the sum of its proper divisors (17706980319).

53110111521 is a wasteful number, since it uses less digits than its factorization.

53110111521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 902455.

The product of its (nonzero) digits is 150, while the sum is 21.

Adding to 53110111521 its reverse (12511101135), we get a palindrome (65621212656).

The spelling of 53110111521 in words is "fifty-three billion, one hundred ten million, one hundred eleven thousand, five hundred twenty-one".