52161621502 has 8 divisors (see below), whose sum is σ = 78760594512. Its totient is φ = 25908090000.

The previous prime is 52161621467. The next prime is 52161621503. The reversal of 52161621502 is 20512616125.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52161621503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86359999 + ... + 86360602.

It is an arithmetic number, because the mean of its divisors is an integer number (9845074314).

Almost surely, 2^52161621502 is an apocalyptic number.

52161621502 is a deficient number, since it is larger than the sum of its proper divisors (26598973010).

52161621502 is a wasteful number, since it uses less digits than its factorization.

52161621502 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172720754.

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 52161621502 in words is "fifty-two billion, one hundred sixty-one million, six hundred twenty-one thousand, five hundred two".