56209545 has 56 divisors (see below), whose sum is σ = 115630656. Its totient is φ = 25684128.

The previous prime is 56209529. The next prime is 56209547. The reversal of 56209545 is 54590265.

56209545 is a `hidden beast` number, since 562 + 0 + 95 + 4 + 5 = 666.

It is not a de Polignac number, because 56209545 - 2⁴ = 56209529 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56209547) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 24414 + ... + 26616.

Almost surely, 2^56209545 is an apocalyptic number.

It is an amenable number.

56209545 is an abundant number, since it is smaller than the sum of its proper divisors (59421111).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56209545 is an equidigital number, since it uses as much as digits as its factorization.

56209545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2233 (or 2218 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 56209545 is about 7497.3025149049. The cubic root of 56209545 is about 383.0628392100.

The spelling of 56209545 in words is "fifty-six million, two hundred nine thousand, five hundred forty-five".