5591089477 has 2 divisors, whose sum is σ = 5591089478. Its totient is φ = 5591089476.

The previous prime is 5591089433. The next prime is 5591089487. The reversal of 5591089477 is 7749801955.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5586964516 + 4124961 = 74746^2 + 2031^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5591089477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5591089487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2795544738 + 2795544739.

It is an arithmetic number, because the mean of its divisors is an integer number (2795544739).

Almost surely, 2^5591089477 is an apocalyptic number.

It is an amenable number.

5591089477 is a deficient number, since it is larger than the sum of its proper divisors (1).

5591089477 is an equidigital number, since it uses as much as digits as its factorization.

5591089477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3175200, while the sum is 55.

The square root of 5591089477 is about 74773.5880976699. The cubic root of 5591089477 is about 1774.8656357459.

The spelling of 5591089477 in words is "five billion, five hundred ninety-one million, eighty-nine thousand, four hundred seventy-seven".