56722243 has 4 divisors (see below), whose sum is σ = 57792528. Its totient is φ = 55651960.

The previous prime is 56722153. The next prime is 56722291. The reversal of 56722243 is 34222765.

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 56722243 - 2¹³ = 56714051 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56720243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 535063 + ... + 535168.

It is an arithmetic number, because the mean of its divisors is an integer number (14448132).

Almost surely, 2^56722243 is an apocalyptic number.

56722243 is a gapful number since it is divisible by the number (53) formed by its first and last digit.

56722243 is a deficient number, since it is larger than the sum of its proper divisors (1070285).

56722243 is a wasteful number, since it uses less digits than its factorization.

56722243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1070284.

The product of its digits is 20160, while the sum is 31.

The square root of 56722243 is about 7531.4170645371. The cubic root of 56722243 is about 384.2239791232.

It can be divided in two parts, 56722 and 243, that added together give a palindrome (56965).

The spelling of 56722243 in words is "fifty-six million, seven hundred twenty-two thousand, two hundred forty-three".