55087873 has 2 divisors, whose sum is σ = 55087874. Its totient is φ = 55087872.

The previous prime is 55087841. The next prime is 55087883. The reversal of 55087873 is 37878055.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42928704 + 12159169 = 6552^2 + 3487^2 .

It is a cyclic number.

It is not a de Polignac number, because 55087873 - 2⁵ = 55087841 is a prime.

It is not a weakly prime, because it can be changed into another prime (55087883) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27543936 + 27543937.

It is an arithmetic number, because the mean of its divisors is an integer number (27543937).

Almost surely, 2^55087873 is an apocalyptic number.

It is an amenable number.

55087873 is a deficient number, since it is larger than the sum of its proper divisors (1).

55087873 is an equidigital number, since it uses as much as digits as its factorization.

55087873 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 235200, while the sum is 43.

The square root of 55087873 is about 7422.1205190970. The cubic root of 55087873 is about 380.4976697300.

The spelling of 55087873 in words is "fifty-five million, eighty-seven thousand, eight hundred seventy-three".