55551277 has 2 divisors, whose sum is σ = 55551278. Its totient is φ = 55551276.

The previous prime is 55551259. The next prime is 55551283. The reversal of 55551277 is 77215555.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 52113961 + 3437316 = 7219^2 + 1854^2 .

It is a cyclic number.

It is not a de Polignac number, because 55551277 - 2¹¹ = 55549229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55551247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27775638 + 27775639.

It is an arithmetic number, because the mean of its divisors is an integer number (27775639).

Almost surely, 2^55551277 is an apocalyptic number.

It is an amenable number.

55551277 is a deficient number, since it is larger than the sum of its proper divisors (1).

55551277 is an equidigital number, since it uses as much as digits as its factorization.

55551277 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 61250, while the sum is 37.

The square root of 55551277 is about 7453.2729052410. The cubic root of 55551277 is about 381.5616184860.

The spelling of 55551277 in words is "fifty-five million, five hundred fifty-one thousand, two hundred seventy-seven".