56438519 has 4 divisors (see below), whose sum is σ = 56569296. Its totient is φ = 56307744.

The previous prime is 56438477. The next prime is 56438537. The reversal of 56438519 is 91583465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91583465 = 5 ⋅18316693.

It is a cyclic number.

It is not a de Polignac number, because 56438519 - 2¹⁶ = 56372983 is a prime.

It is a super-2 number, since 2×56438519² = 6370612853826722, 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 (56438219) 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, 64739 + ... + 65604.

It is an arithmetic number, because the mean of its divisors is an integer number (14142324).

Almost surely, 2^56438519 is an apocalyptic number.

56438519 is a deficient number, since it is larger than the sum of its proper divisors (130777).

56438519 is a wasteful number, since it uses less digits than its factorization.

56438519 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130776.

The product of its digits is 129600, while the sum is 41.

The square root of 56438519 is about 7512.5574207456. The cubic root of 56438519 is about 383.5822800484.

The spelling of 56438519 in words is "fifty-six million, four hundred thirty-eight thousand, five hundred nineteen".