55273187 has 2 divisors, whose sum is σ = 55273188. Its totient is φ = 55273186.

The previous prime is 55273181. The next prime is 55273193. The reversal of 55273187 is 78137255.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (55273181) and next prime (55273193).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55273187 is a prime.

It is a super-2 number, since 2×55273187² = 6110250402273938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 55273187.

It is not a weakly prime, because it can be changed into another prime (55273181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27636593 + 27636594.

It is an arithmetic number, because the mean of its divisors is an integer number (27636594).

Almost surely, 2^55273187 is an apocalyptic number.

55273187 is a deficient number, since it is larger than the sum of its proper divisors (1).

55273187 is an equidigital number, since it uses as much as digits as its factorization.

55273187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 58800, while the sum is 38.

The square root of 55273187 is about 7434.5939364568. The cubic root of 55273187 is about 380.9238532226.

The spelling of 55273187 in words is "fifty-five million, two hundred seventy-three thousand, one hundred eighty-seven".