52115154311021 has 8 divisors (see below), whose sum is σ = 55180817105400. Its totient is φ = 49049498792448.

The previous prime is 52115154310957. The next prime is 52115154311027. The reversal of 52115154311021 is 12011345151125.

It can be written as a sum of positive squares in 4 ways, for example, as 141349681225 + 51973804629796 = 375965^2 + 7209286^2 .

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 52115154311021 - 2⁶ = 52115154310957 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52115154311027) 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, 21386705 + ... + 23698553.

It is an arithmetic number, because the mean of its divisors is an integer number (6897602138175).

Almost surely, 2^{52115154311021} is an apocalyptic number.

It is an amenable number.

52115154311021 is a deficient number, since it is larger than the sum of its proper divisors (3065662794379).

52115154311021 is a wasteful number, since it uses less digits than its factorization.

52115154311021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3637903.

The product of its (nonzero) digits is 6000, while the sum is 32.

Adding to 52115154311021 its reverse (12011345151125), we get a palindrome (64126499462146).

The spelling of 52115154311021 in words is "fifty-two trillion, one hundred fifteen billion, one hundred fifty-four million, three hundred eleven thousand, twenty-one".