55040302 has 16 divisors (see below), whose sum is σ = 87498000. Its totient is φ = 25894080.

The previous prime is 55040291. The next prime is 55040309. The reversal of 55040302 is 20304055.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a self number, because there is not a number n which added to its sum of digits gives 55040302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55040309) 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, 802 + ... + 10522.

It is an arithmetic number, because the mean of its divisors is an integer number (5468625).

Almost surely, 2^55040302 is an apocalyptic number.

55040302 is a deficient number, since it is larger than the sum of its proper divisors (32457698).

55040302 is a wasteful number, since it uses less digits than its factorization.

55040302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9891.

The product of its (nonzero) digits is 600, while the sum is 19.

The square root of 55040302 is about 7418.9151498046. The cubic root of 55040302 is about 380.3881122393.

Adding to 55040302 its reverse (20304055), we get a palindrome (75344357).

The spelling of 55040302 in words is "fifty-five million, forty thousand, three hundred two".