55545307 has 4 divisors (see below), whose sum is σ = 58812696. Its totient is φ = 52277920.

The previous prime is 55545289. The next prime is 55545323. The reversal of 55545307 is 70354555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70354555 = 5 ⋅14070911.

It is a cyclic number.

It is not a de Polignac number, because 55545307 - 2¹¹ = 55543259 is a prime.

It is a super-2 number, since 2×55545307² = 6170562259448498, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55545367) 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 3 ways as a sum of consecutive naturals, for example, 1633669 + ... + 1633702.

It is an arithmetic number, because the mean of its divisors is an integer number (14703174).

Almost surely, 2^55545307 is an apocalyptic number.

55545307 is a deficient number, since it is larger than the sum of its proper divisors (3267389).

55545307 is a wasteful number, since it uses less digits than its factorization.

55545307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267388.

The product of its (nonzero) digits is 52500, while the sum is 34.

The square root of 55545307 is about 7452.8723992834. The cubic root of 55545307 is about 381.5479494065.

The spelling of 55545307 in words is "fifty-five million, five hundred forty-five thousand, three hundred seven".