56705251 has 8 divisors (see below), whose sum is σ = 60279120. Its totient is φ = 53157888.

The previous prime is 56705239. The next prime is 56705263. The reversal of 56705251 is 15250765.

It is an interprime number because it is at equal distance from previous prime (56705239) and next prime (56705263).

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

It is a cyclic number.

It is not a de Polignac number, because 56705251 - 2⁵ = 56705219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56705221) by changing a digit.

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, 2121 + ... + 10858.

It is an arithmetic number, because the mean of its divisors is an integer number (7534890).

Almost surely, 2^56705251 is an apocalyptic number.

56705251 is a deficient number, since it is larger than the sum of its proper divisors (3573869).

56705251 is a wasteful number, since it uses less digits than its factorization.

56705251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13253.

The product of its (nonzero) digits is 10500, while the sum is 31.

The square root of 56705251 is about 7530.2889054803. The cubic root of 56705251 is about 384.1856086032.

The spelling of 56705251 in words is "fifty-six million, seven hundred five thousand, two hundred fifty-one".