56661041 has 4 divisors (see below), whose sum is σ = 58614900. Its totient is φ = 54707184.

The previous prime is 56661019. The next prime is 56661043. The reversal of 56661041 is 14016665.

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

It can be written as a sum of positive squares in 2 ways, for example, as 14137600 + 42523441 = 3760^2 + 6521^2 .

It is a cyclic number.

It is not a de Polignac number, because 56661041 - 2⁶ = 56660977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 1953829 = 56661041 / (5 + 6 + 6 + 6 + 1 + 0 + 4 + 1).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56660995 and 56661013.

It is not an unprimeable number, because it can be changed into a prime (56661043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 976886 + ... + 976943.

It is an arithmetic number, because the mean of its divisors is an integer number (14653725).

Almost surely, 2^56661041 is an apocalyptic number.

It is an amenable number.

56661041 is a deficient number, since it is larger than the sum of its proper divisors (1953859).

56661041 is a wasteful number, since it uses less digits than its factorization.

56661041 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953858.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 56661041 is about 7527.3528547558. The cubic root of 56661041 is about 384.0857397702.

The spelling of 56661041 in words is "fifty-six million, six hundred sixty-one thousand, forty-one".