55295287 has 2 divisors, whose sum is σ = 55295288. Its totient is φ = 55295286.

The previous prime is 55295267. The next prime is 55295299. The reversal of 55295287 is 78259255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 55295287 - 2⁷ = 55295159 is a prime.

It is equal to p_3298768 and since 55295287 and 3298768 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55295267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27647643 + 27647644.

It is an arithmetic number, because the mean of its divisors is an integer number (27647644).

Almost surely, 2^55295287 is an apocalyptic number.

55295287 is a deficient number, since it is larger than the sum of its proper divisors (1).

55295287 is an equidigital number, since it uses as much as digits as its factorization.

55295287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 252000, while the sum is 43.

The square root of 55295287 is about 7436.0800829469. The cubic root of 55295287 is about 380.9746149987.

It can be divided in two parts, 5529 and 5287, that added together give a square (10816 = 104²).

The spelling of 55295287 in words is "fifty-five million, two hundred ninety-five thousand, two hundred eighty-seven".