253403545 has 8 divisors (see below), whose sum is σ = 304197120. Its totient is φ = 202647600.

The previous prime is 253403509. The next prime is 253403561. The reversal of 253403545 is 545304352.

It is a happy number.

253403545 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-253403545 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8520 + ... + 24070.

It is an arithmetic number, because the mean of its divisors is an integer number (38024640).

Almost surely, 2^253403545 is an apocalyptic number.

It is an amenable number.

253403545 is a deficient number, since it is larger than the sum of its proper divisors (50793575).

253403545 is a wasteful number, since it uses less digits than its factorization.

253403545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18815.

The product of its (nonzero) digits is 36000, while the sum is 31.

The square root of 253403545 is about 15918.6539946065. The cubic root of 253403545 is about 632.8064474491.

Adding to 253403545 its reverse (545304352), we get a palindrome (798707897).

The spelling of 253403545 in words is "two hundred fifty-three million, four hundred three thousand, five hundred forty-five".