56081697 has 32 divisors (see below), whose sum is σ = 88817664. Its totient is φ = 30801600.

The previous prime is 56081687. The next prime is 56081717. The reversal of 56081697 is 79618065.

It is not a de Polignac number, because 56081697 - 2⁶ = 56081633 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56081647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 180172 + ... + 180482.

It is an arithmetic number, because the mean of its divisors is an integer number (2775552).

Almost surely, 2^56081697 is an apocalyptic number.

It is an amenable number.

56081697 is a deficient number, since it is larger than the sum of its proper divisors (32735967).

56081697 is a wasteful number, since it uses less digits than its factorization.

56081697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 56081697 is about 7488.7713945613. The cubic root of 56081697 is about 382.7721946525.

The spelling of 56081697 in words is "fifty-six million, eighty-one thousand, six hundred ninety-seven".