53221510291 has 4 divisors (see below), whose sum is σ = 53423873712. Its totient is φ = 53019146872.

The previous prime is 53221510271. The next prime is 53221510319. The reversal of 53221510291 is 19201512235.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19201512235 = 5 ⋅3840302447.

It is a cyclic number.

It is not a de Polignac number, because 53221510291 - 2⁵ = 53221510259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53221510271) 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 3 ways as a sum of consecutive naturals, for example, 101181316 + ... + 101181841.

It is an arithmetic number, because the mean of its divisors is an integer number (13355968428).

Almost surely, 2^53221510291 is an apocalyptic number.

53221510291 is a deficient number, since it is larger than the sum of its proper divisors (202363421).

53221510291 is a wasteful number, since it uses less digits than its factorization.

53221510291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202363420.

The product of its (nonzero) digits is 5400, while the sum is 31.

The spelling of 53221510291 in words is "fifty-three billion, two hundred twenty-one million, five hundred ten thousand, two hundred ninety-one".