56457519 has 8 divisors (see below), whose sum is σ = 77872560. Its totient is φ = 36340416.

The previous prime is 56457517. The next prime is 56457539. The reversal of 56457519 is 91575465.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56457519 - 2¹ = 56457517 is a prime.

It is a super-2 number, since 2×56457519² = 6374902903270722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56457517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324382 + ... + 324555.

It is an arithmetic number, because the mean of its divisors is an integer number (9734070).

Almost surely, 2^56457519 is an apocalyptic number.

56457519 is a deficient number, since it is larger than the sum of its proper divisors (21415041).

56457519 is a wasteful number, since it uses less digits than its factorization.

56457519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648969.

The product of its digits is 189000, while the sum is 42.

The square root of 56457519 is about 7513.8218637389. The cubic root of 56457519 is about 383.6253194818.

The spelling of 56457519 in words is "fifty-six million, four hundred fifty-seven thousand, five hundred nineteen".