53004402 has 128 divisors (see below), whose sum is σ = 141523200. Its totient is φ = 14515200.

The previous prime is 53004401. The next prime is 53004403. The reversal of 53004402 is 20440035.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53004401) and next prime (53004403).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (53004401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 292752 + ... + 292932.

It is an arithmetic number, because the mean of its divisors is an integer number (1105650).

Almost surely, 2^53004402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53004402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70761600).

53004402 is an abundant number, since it is smaller than the sum of its proper divisors (88518798).

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

53004402 is a wasteful number, since it uses less digits than its factorization.

53004402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 243 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 53004402 is about 7280.4122136044. The cubic root of 53004402 is about 375.6389746121.

Adding to 53004402 its reverse (20440035), we get a palindrome (73444437).

The spelling of 53004402 in words is "fifty-three million, four thousand, four hundred two".