56756873 has 4 divisors (see below), whose sum is σ = 56983248.
Its totient is φ = 56530500.
The previous prime is 56756867. The next prime is 56756891. The reversal of 56756873 is 37865765.
It is a happy number.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 56756873 - 212 = 56752777 is a prime.
It is a Duffinian number.
It is a Curzon number.
It is not an unprimeable number, because it can be changed into a prime (56756803) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112811 + ... + 113312.
It is an arithmetic number, because the mean of its divisors is an integer number (14245812).
Almost surely, 256756873 is an apocalyptic number.
It is an amenable number.
56756873 is a deficient number, since it is larger than the sum of its proper divisors (226375).
56756873 is a wasteful number, since it uses less digits than its factorization.
56756873 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 226374.
The product of its digits is 1058400, while the sum is 47.
The square root of 56756873 is about 7533.7157498807.
The cubic root of 56756873 is about 384.3021552133.
The spelling of 56756873 in words is "fifty-six million, seven hundred fifty-six thousand, eight hundred seventy-three".