253533404 has 12 divisors (see below), whose sum is σ = 444649128. Its totient is φ = 126490800.

The previous prime is 253533353. The next prime is 253533419. The reversal of 253533404 is 404335352.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66902 + ... + 70589.

It is an arithmetic number, because the mean of its divisors is an integer number (37054094).

Almost surely, 2^253533404 is an apocalyptic number.

It is an amenable number.

253533404 is a deficient number, since it is larger than the sum of its proper divisors (191115724).

253533404 is a wasteful number, since it uses less digits than its factorization.

253533404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137956 (or 137954 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 29.

The square root of 253533404 is about 15922.7323032198. The cubic root of 253533404 is about 632.9145248364.

Adding to 253533404 its reverse (404335352), we get a palindrome (657868756).

The spelling of 253533404 in words is "two hundred fifty-three million, five hundred thirty-three thousand, four hundred four".