56705151 has 4 divisors (see below), whose sum is σ = 75606872. Its totient is φ = 37803432.

The previous prime is 56705147. The next prime is 56705153. The reversal of 56705151 is 15150765.

56705151 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 56705151 - 2² = 56705147 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 (56705153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9450856 + ... + 9450861.

It is an arithmetic number, because the mean of its divisors is an integer number (18901718).

Almost surely, 2^56705151 is an apocalyptic number.

56705151 is a deficient number, since it is larger than the sum of its proper divisors (18901721).

56705151 is a wasteful number, since it uses less digits than its factorization.

56705151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18901720.

The product of its (nonzero) digits is 5250, while the sum is 30.

The square root of 56705151 is about 7530.2822656259. The cubic root of 56705151 is about 384.1853827653.

The spelling of 56705151 in words is "fifty-six million, seven hundred five thousand, one hundred fifty-one".