56223040 has 56 divisors (see below), whose sum is σ = 139720320. Its totient is φ = 21508608.

The previous prime is 56223031. The next prime is 56223049. The reversal of 56223040 is 4032265.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (56223031) and next prime (56223049).

It is a super-2 number, since 2×56223040² = 6322060453683200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56223049) 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, 3541 + ... + 11179.

Almost surely, 2^56223040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56223040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69860160).

56223040 is an abundant number, since it is smaller than the sum of its proper divisors (83497280).

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

56223040 is a wasteful number, since it uses less digits than its factorization.

56223040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679 (or 7669 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 56223040 is about 7498.2024512546. The cubic root of 56223040 is about 383.0934924817.

The spelling of 56223040 in words is "fifty-six million, two hundred twenty-three thousand, forty".