56393729 has 16 divisors (see below), whose sum is σ = 68275200. Its totient is φ = 45501264.

The previous prime is 56393717. The next prime is 56393747. The reversal of 56393729 is 92739365.

It is a cyclic number.

It is not a de Polignac number, because 56393729 - 2⁸ = 56393473 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56393729.

It is not an unprimeable number, because it can be changed into a prime (56333729) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20942 + ... + 23480.

It is an arithmetic number, because the mean of its divisors is an integer number (4267200).

It is a Proth number, since it is equal to 1721 ⋅ 2¹⁵ + 1 and 1721 < 2¹⁵.

Almost surely, 2^56393729 is an apocalyptic number.

It is an amenable number.

56393729 is a deficient number, since it is larger than the sum of its proper divisors (11881471).

56393729 is a wasteful number, since it uses less digits than its factorization.

56393729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2732.

The product of its digits is 306180, while the sum is 44.

The square root of 56393729 is about 7509.5758202444. The cubic root of 56393729 is about 383.4807820081.

The spelling of 56393729 in words is "fifty-six million, three hundred ninety-three thousand, seven hundred twenty-nine".