56340561 has 4 divisors (see below), whose sum is σ = 75120752. Its totient is φ = 37560372.

The previous prime is 56340551. The next prime is 56340569. The reversal of 56340561 is 16504365.

56340561 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 56340561 - 2⁶ = 56340497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (56340569) 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, 9390091 + ... + 9390096.

It is an arithmetic number, because the mean of its divisors is an integer number (18780188).

Almost surely, 2^56340561 is an apocalyptic number.

It is an amenable number.

56340561 is a deficient number, since it is larger than the sum of its proper divisors (18780191).

56340561 is a wasteful number, since it uses less digits than its factorization.

56340561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18780190.

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 56340561 is about 7506.0349719409. The cubic root of 56340561 is about 383.3602289047.

The spelling of 56340561 in words is "fifty-six million, three hundred forty thousand, five hundred sixty-one".