56729519 has 12 divisors (see below), whose sum is σ = 71264592. Its totient is φ = 44204160.

The previous prime is 56729501. The next prime is 56729549. The reversal of 56729519 is 91592765.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-56729519 is a prime.

It is a super-2 number, since 2×56729519² = 6436476651942722, which contains 22 as substring.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 56729519.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56729549) 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 11 ways as a sum of consecutive naturals, for example, 32642 + ... + 34335.

It is an arithmetic number, because the mean of its divisors is an integer number (5938716).

Almost surely, 2^56729519 is an apocalyptic number.

56729519 is a deficient number, since it is larger than the sum of its proper divisors (14535073).

56729519 is a wasteful number, since it uses less digits than its factorization.

56729519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67006 (or 66995 counting only the distinct ones).

The product of its digits is 170100, while the sum is 44.

The square root of 56729519 is about 7531.9000922742. The cubic root of 56729519 is about 384.2404070946.

The spelling of 56729519 in words is "fifty-six million, seven hundred twenty-nine thousand, five hundred nineteen".