52155521144257 has 2 divisors, whose sum is σ = 52155521144258. Its totient is φ = 52155521144256.

The previous prime is 52155521144227. The next prime is 52155521144263. The reversal of 52155521144257 is 75244112555125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46837105687696 + 5318415456561 = 6843764^2 + 2306169^2 .

It is a cyclic number.

It is not a de Polignac number, because 52155521144257 - 2¹¹ = 52155521142209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52155521144257.

It is not a weakly prime, because it can be changed into another prime (52155521144227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26077760572128 + 26077760572129.

It is an arithmetic number, because the mean of its divisors is an integer number (26077760572129).

Almost surely, 2^{52155521144257} is an apocalyptic number.

It is an amenable number.

52155521144257 is a deficient number, since it is larger than the sum of its proper divisors (1).

52155521144257 is an equidigital number, since it uses as much as digits as its factorization.

52155521144257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2800000, while the sum is 49.

The spelling of 52155521144257 in words is "fifty-two trillion, one hundred fifty-five billion, five hundred twenty-one million, one hundred forty-four thousand, two hundred fifty-seven".