253145404 has 6 divisors (see below), whose sum is σ = 443004464. Its totient is φ = 126572700.

The previous prime is 253145401. The next prime is 253145423. The reversal of 253145404 is 404541352.

253145404 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253145401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31643172 + ... + 31643179.

Almost surely, 2^253145404 is an apocalyptic number.

It is an amenable number.

253145404 is a deficient number, since it is larger than the sum of its proper divisors (189859060).

253145404 is a wasteful number, since it uses less digits than its factorization.

253145404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63286355 (or 63286353 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 253145404 is about 15910.5437996317. The cubic root of 253145404 is about 632.5914954580.

Adding to 253145404 its reverse (404541352), we get a palindrome (657686756).

The spelling of 253145404 in words is "two hundred fifty-three million, one hundred forty-five thousand, four hundred four".