56546521 has 4 divisors (see below), whose sum is σ = 56580532. Its totient is φ = 56512512.

The previous prime is 56546519. The next prime is 56546531. The reversal of 56546521 is 12564565.

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 6702921 + 49843600 = 2589^2 + 7060^2 .

It is a cyclic number.

It is not a de Polignac number, because 56546521 - 2¹ = 56546519 is a prime.

It is a super-3 number, since 3×56546521³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56546531) 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, 14376 + ... + 17881.

It is an arithmetic number, because the mean of its divisors is an integer number (14145133).

Almost surely, 2^56546521 is an apocalyptic number.

It is an amenable number.

56546521 is a deficient number, since it is larger than the sum of its proper divisors (34011).

56546521 is a wasteful number, since it uses less digits than its factorization.

56546521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34010.

The product of its digits is 36000, while the sum is 34.

The square root of 56546521 is about 7519.7420833430. The cubic root of 56546521 is about 383.8268013232.

The spelling of 56546521 in words is "fifty-six million, five hundred forty-six thousand, five hundred twenty-one".