55303144 has 32 divisors (see below), whose sum is σ = 111978720. Its totient is φ = 25454016.

The previous prime is 55303141. The next prime is 55303147. The reversal of 55303144 is 44130355.

It is an interprime number because it is at equal distance from previous prime (55303141) and next prime (55303147).

It is not an unprimeable number, because it can be changed into a prime (55303141) 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, 66459 + ... + 67285.

It is an arithmetic number, because the mean of its divisors is an integer number (3499335).

Almost surely, 2^55303144 is an apocalyptic number.

It is an amenable number.

55303144 is an abundant number, since it is smaller than the sum of its proper divisors (56675576).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55303144 is a wasteful number, since it uses less digits than its factorization.

55303144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1485 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 55303144 is about 7436.6083667220. The cubic root of 55303144 is about 380.9926585846.

Adding to 55303144 its reverse (44130355), we get a palindrome (99433499).

The spelling of 55303144 in words is "fifty-five million, three hundred three thousand, one hundred forty-four".