52176055981 has 6 divisors (see below), whose sum is σ = 60694595790. Its totient is φ = 44722333656.

The previous prime is 52176055909. The next prime is 52176056033. The reversal of 52176055981 is 18955067125.

It can be written as a sum of positive squares in only one way, i.e., 51406492900 + 769563081 = 226730^2 + 27741^2 .

It is not a de Polignac number, because 52176055981 - 2¹³ = 52176047789 is a prime.

It is a super-2 number, since 2×52176055981² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (49), and also a Moran number because the ratio is a prime number: 1064817469 = 52176055981 / (5 + 2 + 1 + 7 + 6 + 0 + 5 + 5 + 9 + 8 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52176055181) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 532408686 + ... + 532408783.

It is an arithmetic number, because the mean of its divisors is an integer number (10115765965).

Almost surely, 2^52176055981 is an apocalyptic number.

It is an amenable number.

52176055981 is a deficient number, since it is larger than the sum of its proper divisors (8518539809).

52176055981 is a wasteful number, since it uses less digits than its factorization.

52176055981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064817483 (or 1064817476 counting only the distinct ones).

The product of its (nonzero) digits is 756000, while the sum is 49.

The spelling of 52176055981 in words is "fifty-two billion, one hundred seventy-six million, fifty-five thousand, nine hundred eighty-one".