52194190391 has 24 divisors (see below), whose sum is σ = 63059065344. Its totient is φ = 43028904240.

The previous prime is 52194190339. The next prime is 52194190457. The reversal of 52194190391 is 19309149125.

It is not a de Polignac number, because 52194190391 - 2²² = 52189996087 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 (52194190291) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 142196 + ... + 352998.

It is an arithmetic number, because the mean of its divisors is an integer number (2627461056).

Almost surely, 2^52194190391 is an apocalyptic number.

52194190391 is a deficient number, since it is larger than the sum of its proper divisors (10864874953).

52194190391 is a wasteful number, since it uses less digits than its factorization.

52194190391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211011 (or 211004 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 44.

The spelling of 52194190391 in words is "fifty-two billion, one hundred ninety-four million, one hundred ninety thousand, three hundred ninety-one".