55545207 has 32 divisors (see below), whose sum is σ = 80306688. Its totient is φ = 34062336.

The previous prime is 55545169. The next prime is 55545209. The reversal of 55545207 is 70254555.

It is not a de Polignac number, because 55545207 - 2¹² = 55541111 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55545209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 287703 + ... + 287895.

It is an arithmetic number, because the mean of its divisors is an integer number (2509584).

Almost surely, 2^55545207 is an apocalyptic number.

55545207 is a deficient number, since it is larger than the sum of its proper divisors (24761481).

55545207 is a wasteful number, since it uses less digits than its factorization.

55545207 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359.

The product of its (nonzero) digits is 35000, while the sum is 33.

The square root of 55545207 is about 7452.8656904576. The cubic root of 55545207 is about 381.5477204353.

The spelling of 55545207 in words is "fifty-five million, five hundred forty-five thousand, two hundred seven".