56840345 has 4 divisors (see below), whose sum is σ = 68208420. Its totient is φ = 45472272.

The previous prime is 56840323. The next prime is 56840369. The reversal of 56840345 is 54304865.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54304865 = 5 ⋅10860973.

It can be written as a sum of positive squares in 2 ways, for example, as 41847961 + 14992384 = 6469^2 + 3872^2 .

It is a cyclic number.

It is not a de Polignac number, because 56840345 - 2⁸ = 56840089 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5684030 + ... + 5684039.

It is an arithmetic number, because the mean of its divisors is an integer number (17052105).

Almost surely, 2^56840345 is an apocalyptic number.

It is an amenable number.

56840345 is a deficient number, since it is larger than the sum of its proper divisors (11368075).

56840345 is a wasteful number, since it uses less digits than its factorization.

56840345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11368074.

The product of its (nonzero) digits is 57600, while the sum is 35.

The square root of 56840345 is about 7539.2536102720. The cubic root of 56840345 is about 384.4904599052.

The spelling of 56840345 in words is "fifty-six million, eight hundred forty thousand, three hundred forty-five".