56442545 has 4 divisors (see below), whose sum is σ = 67731060. Its totient is φ = 45154032.

The previous prime is 56442539. The next prime is 56442553. The reversal of 56442545 is 54524465.

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 16386304 + 40056241 = 4048^2 + 6329^2 .

It is a cyclic number.

It is not a de Polignac number, because 56442545 - 2²⁰ = 55393969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5644250 + ... + 5644259.

It is an arithmetic number, because the mean of its divisors is an integer number (16932765).

Almost surely, 2^56442545 is an apocalyptic number.

It is an amenable number.

56442545 is a deficient number, since it is larger than the sum of its proper divisors (11288515).

56442545 is a wasteful number, since it uses less digits than its factorization.

56442545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11288514.

The product of its digits is 96000, while the sum is 35.

The square root of 56442545 is about 7512.8253673302. The cubic root of 56442545 is about 383.5914006843.

The spelling of 56442545 in words is "fifty-six million, four hundred forty-two thousand, five hundred forty-five".