55107907 has 2 divisors, whose sum is σ = 55107908. Its totient is φ = 55107906.

The previous prime is 55107887. The next prime is 55107929. The reversal of 55107907 is 70970155.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55107907 - 2¹⁹ = 54583619 is a prime.

It is not a weakly prime, because it can be changed into another prime (55107937) by changing a digit.

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 as a sum of consecutive naturals, namely, 27553953 + 27553954.

It is an arithmetic number, because the mean of its divisors is an integer number (27553954).

Almost surely, 2^55107907 is an apocalyptic number.

55107907 is a deficient number, since it is larger than the sum of its proper divisors (1).

55107907 is an equidigital number, since it uses as much as digits as its factorization.

55107907 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11025, while the sum is 34.

The square root of 55107907 is about 7423.4700107160. The cubic root of 55107907 is about 380.5437897803.

The spelling of 55107907 in words is "fifty-five million, one hundred seven thousand, nine hundred seven".