56787245 has 8 divisors (see below), whose sum is σ = 68399640. Its totient is φ = 45259840.

The previous prime is 56787239. The next prime is 56787271. The reversal of 56787245 is 54278765.

It can be written as a sum of positive squares in 4 ways, for example, as 7941124 + 48846121 = 2818^2 + 6989^2 .

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

It is not a de Polignac number, because 56787245 - 2¹⁰ = 56786221 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56787196 and 56787205.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 19766 + ... + 22455.

It is an arithmetic number, because the mean of its divisors is an integer number (8549955).

Almost surely, 2^56787245 is an apocalyptic number.

It is an amenable number.

56787245 is a deficient number, since it is larger than the sum of its proper divisors (11612395).

56787245 is a wasteful number, since it uses less digits than its factorization.

56787245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42495.

The product of its digits is 470400, while the sum is 44.

The square root of 56787245 is about 7535.7312186675. The cubic root of 56787245 is about 384.3706928374.

The spelling of 56787245 in words is "fifty-six million, seven hundred eighty-seven thousand, two hundred forty-five".