56423500 has 120 divisors (see below), whose sum is σ = 146817216. Its totient is φ = 18933600.

The previous prime is 56423489. The next prime is 56423509. The reversal of 56423500 is 532465.

It is a super-2 number, since 2×56423500² = 6367222704500000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (56423509) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1200477 + ... + 1200523.

Almost surely, 2^56423500 is an apocalyptic number.

56423500 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 56423500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73408608).

56423500 is an abundant number, since it is smaller than the sum of its proper divisors (90393716).

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

56423500 is an equidigital number, since it uses as much as digits as its factorization.

56423500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94 (or 61 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 56423500 is about 7511.5577612104. The cubic root of 56423500 is about 383.5482516728.

Adding to 56423500 its reverse (532465), we get a palindrome (56955965).

The spelling of 56423500 in words is "fifty-six million, four hundred twenty-three thousand, five hundred".