56756842 has 4 divisors (see below), whose sum is σ = 85135266. Its totient is φ = 28378420.

The previous prime is 56756827. The next prime is 56756867. The reversal of 56756842 is 24865765.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39955041 + 16801801 = 6321^2 + 4099^2 .

It is a super-3 number, since 3×56756842³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14189209 + ... + 14189212.

Almost surely, 2^56756842 is an apocalyptic number.

56756842 is a deficient number, since it is larger than the sum of its proper divisors (28378424).

56756842 is a wasteful number, since it uses less digits than its factorization.

56756842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28378423.

The product of its digits is 403200, while the sum is 43.

The square root of 56756842 is about 7533.7136924627. The cubic root of 56756842 is about 384.3020852460.

The spelling of 56756842 in words is "fifty-six million, seven hundred fifty-six thousand, eight hundred forty-two".