55137449 has 8 divisors (see below), whose sum is σ = 58907040. Its totient is φ = 51454656.

The previous prime is 55137377. The next prime is 55137451. The reversal of 55137449 is 94473155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55137449 - 2⁸ = 55137193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55137469) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20384 + ... + 22929.

It is an arithmetic number, because the mean of its divisors is an integer number (7363380).

Almost surely, 2^55137449 is an apocalyptic number.

It is an amenable number.

55137449 is a deficient number, since it is larger than the sum of its proper divisors (3769591).

55137449 is a wasteful number, since it uses less digits than its factorization.

55137449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43399.

The product of its digits is 75600, while the sum is 38.

The square root of 55137449 is about 7425.4595144004. The cubic root of 55137449 is about 380.6117777031.

The spelling of 55137449 in words is "fifty-five million, one hundred thirty-seven thousand, four hundred forty-nine".