55277597 has 2 divisors, whose sum is σ = 55277598. Its totient is φ = 55277596.

The previous prime is 55277549. The next prime is 55277611. The reversal of 55277597 is 79577255.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41654116 + 13623481 = 6454^2 + 3691^2 .

It is a cyclic number.

It is not a de Polignac number, because 55277597 - 2¹⁸ = 55015453 is a prime.

It is a super-2 number, since 2×55277597² = 6111225460188818, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55277197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27638798 + 27638799.

It is an arithmetic number, because the mean of its divisors is an integer number (27638799).

Almost surely, 2^55277597 is an apocalyptic number.

It is an amenable number.

55277597 is a deficient number, since it is larger than the sum of its proper divisors (1).

55277597 is an equidigital number, since it uses as much as digits as its factorization.

55277597 is an evil number, because the sum of its binary digits is even.

The product of its digits is 771750, while the sum is 47.

The square root of 55277597 is about 7434.8905170150. The cubic root of 55277597 is about 380.9339836892.

The spelling of 55277597 in words is "fifty-five million, two hundred seventy-seven thousand, five hundred ninety-seven".