253991804 has 24 divisors (see below), whose sum is σ = 500537856. Its totient is φ = 111726000.

The previous prime is 253991797. The next prime is 253991809. The reversal of 253991804 is 408199352.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253991809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91742 + ... + 94469.

It is an arithmetic number, because the mean of its divisors is an integer number (20855744).

Almost surely, 2^253991804 is an apocalyptic number.

It is an amenable number.

253991804 is a deficient number, since it is larger than the sum of its proper divisors (246546052).

253991804 is a wasteful number, since it uses less digits than its factorization.

253991804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186257 (or 186255 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 253991804 is about 15937.1203170460. The cubic root of 253991804 is about 633.2957413206.

The spelling of 253991804 in words is "two hundred fifty-three million, nine hundred ninety-one thousand, eight hundred four".