52081557493 has 16 divisors (see below), whose sum is σ = 63963713664. Its totient is φ = 41388272640.

The previous prime is 52081557487. The next prime is 52081557503. The reversal of 52081557493 is 39475518025.

It is a cyclic number.

It is not a de Polignac number, because 52081557493 - 2⁵ = 52081557461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52081557413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3258148 + ... + 3274093.

It is an arithmetic number, because the mean of its divisors is an integer number (3997732104).

Almost surely, 2^52081557493 is an apocalyptic number.

It is an amenable number.

52081557493 is a deficient number, since it is larger than the sum of its proper divisors (11882156171).

52081557493 is a wasteful number, since it uses less digits than its factorization.

52081557493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6532332.

The product of its (nonzero) digits is 1512000, while the sum is 49.

The spelling of 52081557493 in words is "fifty-two billion, eighty-one million, five hundred fifty-seven thousand, four hundred ninety-three".