52091819 has 12 divisors (see below), whose sum is σ = 57675744. Its totient is φ = 46769184.

The previous prime is 52091797. The next prime is 52091827. The reversal of 52091819 is 91819025.

It is not a de Polignac number, because 52091819 - 2¹² = 52087723 is a prime.

It is a super-2 number, since 2×52091819² = 5427115213457522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52091899) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16334 + ... + 19260.

It is an arithmetic number, because the mean of its divisors is an integer number (4806312).

Almost surely, 2^52091819 is an apocalyptic number.

52091819 is a deficient number, since it is larger than the sum of its proper divisors (5583925).

52091819 is a wasteful number, since it uses less digits than its factorization.

52091819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3014 (or 2977 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 35.

The square root of 52091819 is about 7217.4662451583. The cubic root of 52091819 is about 373.4706758887.

The spelling of 52091819 in words is "fifty-two million, ninety-one thousand, eight hundred nineteen".