55207045 has 4 divisors (see below), whose sum is σ = 66248460. Its totient is φ = 44165632.

The previous prime is 55206979. The next prime is 55207051. The reversal of 55207045 is 54070255.

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 24137569 + 31069476 = 4913^2 + 5574^2 .

It is a cyclic number.

It is not a de Polignac number, because 55207045 - 2⁷ = 55206917 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5520700 + ... + 5520709.

It is an arithmetic number, because the mean of its divisors is an integer number (16562115).

Almost surely, 2^55207045 is an apocalyptic number.

It is an amenable number.

55207045 is a deficient number, since it is larger than the sum of its proper divisors (11041415).

55207045 is a wasteful number, since it uses less digits than its factorization.

55207045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11041414.

The product of its (nonzero) digits is 7000, while the sum is 28.

The square root of 55207045 is about 7430.1443458388. The cubic root of 55207045 is about 380.7718499136.

The spelling of 55207045 in words is "fifty-five million, two hundred seven thousand, forty-five".