56221648 has 40 divisors (see below), whose sum is σ = 127864832. Its totient is φ = 23442048.

The previous prime is 56221639. The next prime is 56221651. The reversal of 56221648 is 84612265.

It is a super-3 number, since 3×56221648³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2640 + ... + 10927.

Almost surely, 2^56221648 is an apocalyptic number.

It is an amenable number.

56221648 is an abundant number, since it is smaller than the sum of its proper divisors (71643184).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56221648 is a wasteful number, since it uses less digits than its factorization.

56221648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13619 (or 13613 counting only the distinct ones).

The product of its digits is 23040, while the sum is 34.

The square root of 56221648 is about 7498.1096284330. The cubic root of 56221648 is about 383.0903308446.

The spelling of 56221648 in words is "fifty-six million, two hundred twenty-one thousand, six hundred forty-eight".