55447131461 has 2 divisors, whose sum is σ = 55447131462. Its totient is φ = 55447131460.

The previous prime is 55447131413. The next prime is 55447131491. The reversal of 55447131461 is 16413174455.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37401239236 + 18045892225 = 193394^2 + 134335^2 .

It is a cyclic number.

It is not a de Polignac number, because 55447131461 - 2²⁶ = 55380022597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55447131491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27723565730 + 27723565731.

It is an arithmetic number, because the mean of its divisors is an integer number (27723565731).

Almost surely, 2^55447131461 is an apocalyptic number.

It is an amenable number.

55447131461 is a deficient number, since it is larger than the sum of its proper divisors (1).

55447131461 is an equidigital number, since it uses as much as digits as its factorization.

55447131461 is an evil number, because the sum of its binary digits is even.

The product of its digits is 201600, while the sum is 41.

The spelling of 55447131461 in words is "fifty-five billion, four hundred forty-seven million, one hundred thirty-one thousand, four hundred sixty-one".