55440099 has 64 divisors (see below), whose sum is σ = 98219520. Its totient is φ = 30464640.

The previous prime is 55440079. The next prime is 55440139. The reversal of 55440099 is 99004455.

It is not a de Polignac number, because 55440099 - 2¹³ = 55431907 is a prime.

It is a zygodrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55440079) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 320377 + ... + 320549.

It is an arithmetic number, because the mean of its divisors is an integer number (1534680).

Almost surely, 2^55440099 is an apocalyptic number.

55440099 is a deficient number, since it is larger than the sum of its proper divisors (42779421).

55440099 is a wasteful number, since it uses less digits than its factorization.

55440099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289 (or 283 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 55440099 is about 7445.8108356310. The cubic root of 55440099 is about 381.3069013342.

The spelling of 55440099 in words is "fifty-five million, four hundred forty thousand, ninety-nine".