521652160101 has 4 divisors (see below), whose sum is σ = 695536213472. Its totient is φ = 347768106732.

The previous prime is 521652160091. The next prime is 521652160129. The reversal of 521652160101 is 101061256125.

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 not a de Polignac number, because 521652160101 - 2⁶ = 521652160037 is a prime.

It is a super-2 number, since 2×521652160101² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521652160151) 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, 86942026681 + ... + 86942026686.

It is an arithmetic number, because the mean of its divisors is an integer number (173884053368).

Almost surely, 2^521652160101 is an apocalyptic number.

It is an amenable number.

521652160101 is a deficient number, since it is larger than the sum of its proper divisors (173884053371).

521652160101 is a wasteful number, since it uses less digits than its factorization.

521652160101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173884053370.

The product of its (nonzero) digits is 3600, while the sum is 30.

The spelling of 521652160101 in words is "five hundred twenty-one billion, six hundred fifty-two million, one hundred sixty thousand, one hundred one".