53512104421 has 4 divisors (see below), whose sum is σ = 53832536352. Its totient is φ = 53191672492.

The previous prime is 53512104413. The next prime is 53512104463. The reversal of 53512104421 is 12440121535.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53512104421 - 2³ = 53512104413 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 53512104421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53512101421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160215715 + ... + 160216048.

It is an arithmetic number, because the mean of its divisors is an integer number (13458134088).

Almost surely, 2^53512104421 is an apocalyptic number.

It is an amenable number.

53512104421 is a deficient number, since it is larger than the sum of its proper divisors (320431931).

53512104421 is a wasteful number, since it uses less digits than its factorization.

53512104421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320431930.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 53512104421 its reverse (12440121535), we get a palindrome (65952225956).

The spelling of 53512104421 in words is "fifty-three billion, five hundred twelve million, one hundred four thousand, four hundred twenty-one".