52591719 has 4 divisors (see below), whose sum is σ = 70122296. Its totient is φ = 35061144.

The previous prime is 52591681. The next prime is 52591723. The reversal of 52591719 is 91719525.

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

It is a de Polignac number, because none of the positive numbers 2^k-52591719 is a prime.

It is a super-2 number, since 2×52591719² = 5531777814749922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52591739) 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, 8765284 + ... + 8765289.

It is an arithmetic number, because the mean of its divisors is an integer number (17530574).

Almost surely, 2^52591719 is an apocalyptic number.

52591719 is a deficient number, since it is larger than the sum of its proper divisors (17530577).

52591719 is a wasteful number, since it uses less digits than its factorization.

52591719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17530576.

The product of its digits is 28350, while the sum is 39.

The square root of 52591719 is about 7252.0148234818. The cubic root of 52591719 is about 374.6615470686.

The spelling of 52591719 in words is "fifty-two million, five hundred ninety-one thousand, seven hundred nineteen".