56650000 has 120 divisors (see below), whose sum is σ = 151115328. Its totient is φ = 20400000.

The previous prime is 56649961. The next prime is 56650003. The reversal of 56650000 is 5665.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (56650003) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 549949 + ... + 550051.

Almost surely, 2^56650000 is an apocalyptic number.

56650000 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 56650000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75557664).

56650000 is an abundant number, since it is smaller than the sum of its proper divisors (94465328).

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

56650000 is a wasteful number, since it uses less digits than its factorization.

56650000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 56650000 is about 7526.6194270735. The cubic root of 56650000 is about 384.0607904337.

Adding to 56650000 its reverse (5665), we get a palindrome (56655665).

Multiplying 56650000 by its reverse (5665), we get a square (320922250000 = 566500²).

56650000 divided by its reverse (5665) gives a 4-th power (10000 = 10⁴).

It can be divided in two parts, 56 and 650000, that added together give a palindrome (650056).

The spelling of 56650000 in words is "fifty-six million, six hundred fifty thousand".