52121621051 has 8 divisors (see below), whose sum is σ = 54393725184. Its totient is φ = 49850012520.

The previous prime is 52121620987. The next prime is 52121621077. The reversal of 52121621051 is 15012612125.

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

It is a cyclic number.

It is not a de Polignac number, because 52121621051 - 2⁶ = 52121620987 is a prime.

It is a super-5 number, since 5×52121621051⁵ (a number of 55 digits) contains 55555 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 52121621051.

It is not an unprimeable number, because it can be changed into a prime (52121629051) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99620 + ... + 337886.

It is an arithmetic number, because the mean of its divisors is an integer number (6799215648).

Almost surely, 2^52121621051 is an apocalyptic number.

52121621051 is a deficient number, since it is larger than the sum of its proper divisors (2272104133).

52121621051 is a wasteful number, since it uses less digits than its factorization.

52121621051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247801.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 52121621051 in words is "fifty-two billion, one hundred twenty-one million, six hundred twenty-one thousand, fifty-one".