56426519 has 4 divisors (see below), whose sum is σ = 59745744. Its totient is φ = 53107296.

The previous prime is 56426483. The next prime is 56426533. The reversal of 56426519 is 91562465.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91562465 = 5 ⋅18312493.

It is a cyclic number.

It is not a de Polignac number, because 56426519 - 2²⁴ = 39649303 is a prime.

It is a super-2 number, since 2×56426519² = 6367904092914722, 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 (56426719) 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, 1659587 + ... + 1659620.

It is an arithmetic number, because the mean of its divisors is an integer number (14936436).

Almost surely, 2^56426519 is an apocalyptic number.

56426519 is a deficient number, since it is larger than the sum of its proper divisors (3319225).

56426519 is a wasteful number, since it uses less digits than its factorization.

56426519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3319224.

The product of its digits is 64800, while the sum is 38.

The square root of 56426519 is about 7511.7587155073. The cubic root of 56426519 is about 383.5550922713. Note that the first 3 decimals are identical.

The spelling of 56426519 in words is "fifty-six million, four hundred twenty-six thousand, five hundred nineteen".