53533245621 has 16 divisors (see below), whose sum is σ = 73723750400. Its totient is φ = 34517147760.

The previous prime is 53533245611. The next prime is 53533245631. The reversal of 53533245621 is 12654233535.

It is an interprime number because it is at equal distance from previous prime (53533245611) and next prime (53533245631).

It is not a de Polignac number, because 53533245621 - 2⁵ = 53533245589 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53533245621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53533245611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11395 + ... + 327408.

It is an arithmetic number, because the mean of its divisors is an integer number (4607734400).

Almost surely, 2^53533245621 is an apocalyptic number.

It is an amenable number.

53533245621 is a deficient number, since it is larger than the sum of its proper divisors (20190504779).

53533245621 is a wasteful number, since it uses less digits than its factorization.

53533245621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340536.

The product of its digits is 324000, while the sum is 39.

The spelling of 53533245621 in words is "fifty-three billion, five hundred thirty-three million, two hundred forty-five thousand, six hundred twenty-one".