55022087 has 2 divisors, whose sum is σ = 55022088. Its totient is φ = 55022086.

The previous prime is 55022057. The next prime is 55022113. The reversal of 55022087 is 78022055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55022087 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55022027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27511043 + 27511044.

It is an arithmetic number, because the mean of its divisors is an integer number (27511044).

Almost surely, 2^55022087 is an apocalyptic number.

55022087 is a deficient number, since it is larger than the sum of its proper divisors (1).

55022087 is an equidigital number, since it uses as much as digits as its factorization.

55022087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 55022087 is about 7417.6874428625. The cubic root of 55022087 is about 380.3461458154.

The spelling of 55022087 in words is "fifty-five million, twenty-two thousand, eighty-seven".