56923221 has 8 divisors (see below), whose sum is σ = 79892320. Its totient is φ = 35951472.

The previous prime is 56923199. The next prime is 56923231. The reversal of 56923221 is 12232965.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 56923221 - 2⁷ = 56923093 is a prime.

It is a super-3 number, since 3×56923221³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56923231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 499270 + ... + 499383.

It is an arithmetic number, because the mean of its divisors is an integer number (9986540).

Almost surely, 2^56923221 is an apocalyptic number.

It is an amenable number.

56923221 is a deficient number, since it is larger than the sum of its proper divisors (22969099).

56923221 is a wasteful number, since it uses less digits than its factorization.

56923221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 998675.

The product of its digits is 6480, while the sum is 30.

The square root of 56923221 is about 7544.7479083134. The cubic root of 56923221 is about 384.6772377826.

The spelling of 56923221 in words is "fifty-six million, nine hundred twenty-three thousand, two hundred twenty-one".