52015353421 has 4 divisors (see below), whose sum is σ = 52135481692. Its totient is φ = 51895225152.

The previous prime is 52015353359. The next prime is 52015353457. The reversal of 52015353421 is 12435351025.

52015353421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 26984632900 + 25030720521 = 164270^2 + 158211^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52015353421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52015357421) 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, 60063486 + ... + 60064351.

It is an arithmetic number, because the mean of its divisors is an integer number (13033870423).

Almost surely, 2^52015353421 is an apocalyptic number.

It is an amenable number.

52015353421 is a deficient number, since it is larger than the sum of its proper divisors (120128271).

52015353421 is a wasteful number, since it uses less digits than its factorization.

52015353421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120128270.

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 52015353421 in words is "fifty-two billion, fifteen million, three hundred fifty-three thousand, four hundred twenty-one".