56066621 has 8 divisors (see below), whose sum is σ = 60752160. Its totient is φ = 51434352.

The previous prime is 56066597. The next prime is 56066627. The reversal of 56066621 is 12666065.

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 56066621 - 2¹⁴ = 56050237 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56066627) 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, 11111 + ... + 15348.

It is an arithmetic number, because the mean of its divisors is an integer number (7594020).

Almost surely, 2^56066621 is an apocalyptic number.

It is an amenable number.

56066621 is a deficient number, since it is larger than the sum of its proper divisors (4685539).

56066621 is a wasteful number, since it uses less digits than its factorization.

56066621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26635.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 56066621 is about 7487.7647532491. The cubic root of 56066621 is about 382.7378923692.

The spelling of 56066621 in words is "fifty-six million, sixty-six thousand, six hundred twenty-one".