55188607 has 2 divisors, whose sum is σ = 55188608. Its totient is φ = 55188606.

The previous prime is 55188599. The next prime is 55188611. The reversal of 55188607 is 70688155.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55188607 - 2³ = 55188599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 55188607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55188667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27594303 + 27594304.

It is an arithmetic number, because the mean of its divisors is an integer number (27594304).

Almost surely, 2^55188607 is an apocalyptic number.

55188607 is a deficient number, since it is larger than the sum of its proper divisors (1).

55188607 is an equidigital number, since it uses as much as digits as its factorization.

55188607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 67200, while the sum is 40.

The square root of 55188607 is about 7428.9034857104. The cubic root of 55188607 is about 380.7294552452.

The spelling of 55188607 in words is "fifty-five million, one hundred eighty-eight thousand, six hundred seven".