53021503221 has 8 divisors (see below), whose sum is σ = 70704398880. Its totient is φ = 35343138192.

The previous prime is 53021503211. The next prime is 53021503253. The reversal of 53021503221 is 12230512035.

It is a happy number.

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

It is not a de Polignac number, because 53021503221 - 2²⁵ = 52987948789 is a prime.

It is a super-2 number, since 2×53021503221² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 53021503191 and 53021503200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53021503211) 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, 1105255 + ... + 1152228.

It is an arithmetic number, because the mean of its divisors is an integer number (8838049860).

Almost surely, 2^53021503221 is an apocalyptic number.

It is an amenable number.

53021503221 is a deficient number, since it is larger than the sum of its proper divisors (17682895659).

53021503221 is a wasteful number, since it uses less digits than its factorization.

53021503221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2265315.

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

The spelling of 53021503221 in words is "fifty-three billion, twenty-one million, five hundred three thousand, two hundred twenty-one".