55022229491 has 2 divisors, whose sum is σ = 55022229492. Its totient is φ = 55022229490.

The previous prime is 55022229407. The next prime is 55022229539. The reversal of 55022229491 is 19492222055.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55022229491 is a prime.

It is not a weakly prime, because it can be changed into another prime (55022229391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27511114745 + 27511114746.

It is an arithmetic number, because the mean of its divisors is an integer number (27511114746).

Almost surely, 2^55022229491 is an apocalyptic number.

55022229491 is a deficient number, since it is larger than the sum of its proper divisors (1).

55022229491 is an equidigital number, since it uses as much as digits as its factorization.

55022229491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 129600, while the sum is 41.

The spelling of 55022229491 in words is "fifty-five billion, twenty-two million, two hundred twenty-nine thousand, four hundred ninety-one".