52613517491 has 4 divisors (see below), whose sum is σ = 52807663584. Its totient is φ = 52419371400.

The previous prime is 52613517487. The next prime is 52613517499. The reversal of 52613517491 is 19471531625.

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 52613517491 - 2² = 52613517487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52613517499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 97072640 + ... + 97073181.

It is an arithmetic number, because the mean of its divisors is an integer number (13201915896).

Almost surely, 2^52613517491 is an apocalyptic number.

52613517491 is a deficient number, since it is larger than the sum of its proper divisors (194146093).

52613517491 is a wasteful number, since it uses less digits than its factorization.

52613517491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194146092.

The product of its digits is 226800, while the sum is 44.

The spelling of 52613517491 in words is "fifty-two billion, six hundred thirteen million, five hundred seventeen thousand, four hundred ninety-one".