55520107 has 2 divisors, whose sum is σ = 55520108. Its totient is φ = 55520106.

The previous prime is 55520099. The next prime is 55520149. The reversal of 55520107 is 70102555.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55520107 - 2³ = 55520099 is a prime.

It is not a weakly prime, because it can be changed into another prime (55520167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27760053 + 27760054.

It is an arithmetic number, because the mean of its divisors is an integer number (27760054).

Almost surely, 2^55520107 is an apocalyptic number.

55520107 is a deficient number, since it is larger than the sum of its proper divisors (1).

55520107 is an equidigital number, since it uses as much as digits as its factorization.

55520107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1750, while the sum is 25.

The square root of 55520107 is about 7451.1815841516. The cubic root of 55520107 is about 381.4902399841.

The spelling of 55520107 in words is "fifty-five million, five hundred twenty thousand, one hundred seven".