56491285 has 8 divisors (see below), whose sum is σ = 67841496. Its totient is φ = 45158400.

The previous prime is 56491283. The next prime is 56491297. The reversal of 56491285 is 58219465.

It can be written as a sum of positive squares in 4 ways, for example, as 43480836 + 13010449 = 6594^2 + 3607^2 .

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

It is not a de Polignac number, because 56491285 - 2¹ = 56491283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56491283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4477 + ... + 11533.

It is an arithmetic number, because the mean of its divisors is an integer number (8480187).

Almost surely, 2^56491285 is an apocalyptic number.

It is an amenable number.

56491285 is a deficient number, since it is larger than the sum of its proper divisors (11350211).

56491285 is a wasteful number, since it uses less digits than its factorization.

56491285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8663.

The product of its digits is 86400, while the sum is 40.

The square root of 56491285 is about 7516.0684536531. The cubic root of 56491285 is about 383.7017835278.

The spelling of 56491285 in words is "fifty-six million, four hundred ninety-one thousand, two hundred eighty-five".