56220061 has 8 divisors (see below), whose sum is σ = 57771000. Its totient is φ = 54677760.

The previous prime is 56220053. The next prime is 56220077. The reversal of 56220061 is 16002265.

It can be written as a sum of positive squares in 4 ways, for example, as 60025 + 56160036 = 245^2 + 7494^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 56220061 - 2³ = 56220053 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 (56220161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12345 + ... + 16273.

It is an arithmetic number, because the mean of its divisors is an integer number (7221375).

Almost surely, 2^56220061 is an apocalyptic number.

It is an amenable number.

56220061 is a deficient number, since it is larger than the sum of its proper divisors (1550939).

56220061 is a wasteful number, since it uses less digits than its factorization.

56220061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4319.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 56220061 is about 7498.0038010126. The cubic root of 56220061 is about 383.0867262422.

The spelling of 56220061 in words is "fifty-six million, two hundred twenty thousand, sixty-one".