56401711 has 4 divisors (see below), whose sum is σ = 56426992. Its totient is φ = 56376432.

The previous prime is 56401687. The next prime is 56401721. The reversal of 56401711 is 11710465.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 56401711 - 2¹¹ = 56399663 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 (56401721) 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 3 ways as a sum of consecutive naturals, for example, 8931 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (14106748).

Almost surely, 2^56401711 is an apocalyptic number.

56401711 is a deficient number, since it is larger than the sum of its proper divisors (25281).

56401711 is a wasteful number, since it uses less digits than its factorization.

56401711 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25280.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 56401711 is about 7510.1072562248. The cubic root of 56401711 is about 383.4988738495.

The spelling of 56401711 in words is "fifty-six million, four hundred one thousand, seven hundred eleven".