56072500 has 60 divisors (see below), whose sum is σ = 133832160. Its totient is φ = 20380000.

The previous prime is 56072449. The next prime is 56072503. The reversal of 56072500 is 527065.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56072503) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 26481 + ... + 28519.

It is an arithmetic number, because the mean of its divisors is an integer number (2230536).

Almost surely, 2^56072500 is an apocalyptic number.

56072500 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 56072500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (66916080).

56072500 is an abundant number, since it is smaller than the sum of its proper divisors (77759660).

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

56072500 is a wasteful number, since it uses less digits than its factorization.

56072500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2074 (or 2057 counting only the distinct ones).

The product of its (nonzero) digits is 2100, while the sum is 25.

The square root of 56072500 is about 7488.1573167235. The cubic root of 56072500 is about 382.7512695348.

Adding to 56072500 its reverse (527065), we get a palindrome (56599565).

The spelling of 56072500 in words is "fifty-six million, seventy-two thousand, five hundred".