56215000 has 40 divisors (see below), whose sum is σ = 131723460. Its totient is φ = 22484000.

The previous prime is 56214989. The next prime is 56215001. The reversal of 56215000 is 51265.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56215001) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 622 + ... + 10621.

Almost surely, 2^56215000 is an apocalyptic number.

56215000 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 56215000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65861730).

56215000 is an abundant number, since it is smaller than the sum of its proper divisors (75508460).

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

56215000 is a wasteful number, since it uses less digits than its factorization.

56215000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11269 (or 11250 counting only the distinct ones).

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 56215000 is about 7497.6663035907. Note that the first 3 decimals coincide. The cubic root of 56215000 is about 383.0752305823.

Adding to 56215000 its reverse (51265), we get a palindrome (56266265).

The spelling of 56215000 in words is "fifty-six million, two hundred fifteen thousand".