55447131489 has 4 divisors (see below), whose sum is σ = 73929508656. Its totient is φ = 36964754324.

The previous prime is 55447131461. The next prime is 55447131491. The reversal of 55447131489 is 98413174455.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55447131489 - 2¹⁹ = 55446607201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55447131499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9241188579 + ... + 9241188584.

It is an arithmetic number, because the mean of its divisors is an integer number (18482377164).

Almost surely, 2^55447131489 is an apocalyptic number.

It is an amenable number.

55447131489 is a deficient number, since it is larger than the sum of its proper divisors (18482377167).

55447131489 is a wasteful number, since it uses less digits than its factorization.

55447131489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18482377166.

The product of its digits is 2419200, while the sum is 51.

The spelling of 55447131489 in words is "fifty-five billion, four hundred forty-seven million, one hundred thirty-one thousand, four hundred eighty-nine".