52506505157399 has 4 divisors (see below), whose sum is σ = 52507345552536. Its totient is φ = 52505664762264.

The previous prime is 52506505157383. The next prime is 52506505157419. The reversal of 52506505157399 is 99375150560525.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 52506505157399 - 2⁴ = 52506505157383 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 (52506505157329) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 420103844 + ... + 420228809.

It is an arithmetic number, because the mean of its divisors is an integer number (13126836388134).

Almost surely, 2^{52506505157399} is an apocalyptic number.

52506505157399 is a deficient number, since it is larger than the sum of its proper divisors (840395137).

52506505157399 is an equidigital number, since it uses as much as digits as its factorization.

52506505157399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840395136.

The product of its (nonzero) digits is 63787500, while the sum is 62.

The spelling of 52506505157399 in words is "fifty-two trillion, five hundred six billion, five hundred five million, one hundred fifty-seven thousand, three hundred ninety-nine".