56730319 has 4 divisors (see below), whose sum is σ = 56750560. Its totient is φ = 56710080.

The previous prime is 56730313. The next prime is 56730383. The reversal of 56730319 is 91303765.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56730319 - 2⁹ = 56729807 is a prime.

It is a super-2 number, since 2×56730319² = 6436658187683522, 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 (56730313) 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, 5079 + ... + 11800.

It is an arithmetic number, because the mean of its divisors is an integer number (14187640).

Almost surely, 2^56730319 is an apocalyptic number.

56730319 is a deficient number, since it is larger than the sum of its proper divisors (20241).

56730319 is a wasteful number, since it uses less digits than its factorization.

56730319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20240.

The product of its (nonzero) digits is 17010, while the sum is 34.

The square root of 56730319 is about 7531.9531995360. The cubic root of 56730319 is about 384.2422132729.

The spelling of 56730319 in words is "fifty-six million, seven hundred thirty thousand, three hundred nineteen".