56221558 has 8 divisors (see below), whose sum is σ = 84367800. Its totient is φ = 28098960.

The previous prime is 56221553. The next prime is 56221579. The reversal of 56221558 is 85512265.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56221553) 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, 2338 + ... + 10858.

It is an arithmetic number, because the mean of its divisors is an integer number (10545975).

Almost surely, 2^56221558 is an apocalyptic number.

56221558 is a deficient number, since it is larger than the sum of its proper divisors (28146242).

56221558 is a wasteful number, since it uses less digits than its factorization.

56221558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11822.

The product of its digits is 24000, while the sum is 34.

The square root of 56221558 is about 7498.1036269179. The cubic root of 56221558 is about 383.0901264267.

The spelling of 56221558 in words is "fifty-six million, two hundred twenty-one thousand, five hundred fifty-eight".