55231449 has 32 divisors (see below), whose sum is σ = 91069440. Its totient is φ = 28994112.

The previous prime is 55231447. The next prime is 55231471. The reversal of 55231449 is 94413255.

It is not a de Polignac number, because 55231449 - 2¹ = 55231447 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55231447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 83482 + ... + 84140.

It is an arithmetic number, because the mean of its divisors is an integer number (2845920).

Almost surely, 2^55231449 is an apocalyptic number.

It is an amenable number.

55231449 is a deficient number, since it is larger than the sum of its proper divisors (35837991).

55231449 is a wasteful number, since it uses less digits than its factorization.

55231449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 989.

The product of its digits is 21600, while the sum is 33.

The square root of 55231449 is about 7431.7863935934. The cubic root of 55231449 is about 380.8279477500.

The spelling of 55231449 in words is "fifty-five million, two hundred thirty-one thousand, four hundred forty-nine".