56172898 has 8 divisors (see below), whose sum is σ = 85849308. Its totient is φ = 27556464.

The previous prime is 56172889. The next prime is 56172917. The reversal of 56172898 is 89827165.

It can be written as a sum of positive squares in 2 ways, for example, as 48483369 + 7689529 = 6963^2 + 2773^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 in 3 ways as a sum of consecutive naturals, for example, 264861 + ... + 265072.

Almost surely, 2^56172898 is an apocalyptic number.

56172898 is a deficient number, since it is larger than the sum of its proper divisors (29676410).

56172898 is a wasteful number, since it uses less digits than its factorization.

56172898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529988.

The product of its digits is 241920, while the sum is 46.

The square root of 56172898 is about 7494.8581040604. The cubic root of 56172898 is about 382.9795724754.

It can be divided in two parts, 5617 and 2898, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 56172898 in words is "fifty-six million, one hundred seventy-two thousand, eight hundred ninety-eight".