52161112061 has 4 divisors (see below), whose sum is σ = 52536372000. Its totient is φ = 51785852124.

The previous prime is 52161112057. The next prime is 52161112063. The reversal of 52161112061 is 16021116125.

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 52161112061 - 2² = 52161112057 is a prime.

It is a super-2 number, since 2×52161112061² (a number of 22 digits) contains 22 as substring.

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 52161112061.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52161112063) 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, 187629761 + ... + 187630038.

It is an arithmetic number, because the mean of its divisors is an integer number (13134093000).

Almost surely, 2^52161112061 is an apocalyptic number.

It is an amenable number.

52161112061 is a deficient number, since it is larger than the sum of its proper divisors (375259939).

52161112061 is a wasteful number, since it uses less digits than its factorization.

52161112061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375259938.

The product of its (nonzero) digits is 720, while the sum is 26.

Adding to 52161112061 its reverse (16021116125), we get a palindrome (68182228186).

The spelling of 52161112061 in words is "fifty-two billion, one hundred sixty-one million, one hundred twelve thousand, sixty-one".