53504403 has 4 divisors (see below), whose sum is σ = 71339208. Its totient is φ = 35669600.

The previous prime is 53504329. The next prime is 53504411. The reversal of 53504403 is 30440535.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 53504403 - 2²² = 49310099 is a prime.

It is a super-2 number, since 2×53504403² = 5725442280772818, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53504443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8917398 + ... + 8917403.

It is an arithmetic number, because the mean of its divisors is an integer number (17834802).

Almost surely, 2^53504403 is an apocalyptic number.

53504403 is a deficient number, since it is larger than the sum of its proper divisors (17834805).

53504403 is a wasteful number, since it uses less digits than its factorization.

53504403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17834804.

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53504403 is about 7314.6703958552. The cubic root of 53504403 is about 376.8164388161.

Adding to 53504403 its reverse (30440535), we get a palindrome (83944938).

The spelling of 53504403 in words is "fifty-three million, five hundred four thousand, four hundred three".