253503012 has 48 divisors (see below), whose sum is σ = 685284992. Its totient is φ = 71435520.

The previous prime is 253502993. The next prime is 253503013. The reversal of 253503012 is 210305352.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 253503012.

It is not an unprimeable number, because it can be changed into a prime (253503013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14539 + ... + 26802.

Almost surely, 2^253503012 is an apocalyptic number.

It is an amenable number.

253503012 is an abundant number, since it is smaller than the sum of its proper divisors (431781980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253503012 is a wasteful number, since it uses less digits than its factorization.

253503012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41428 (or 41426 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 253503012 is about 15921.7779157982. Note that the first 3 decimals coincide. The cubic root of 253503012 is about 632.8892338799.

Adding to 253503012 its reverse (210305352), we get a palindrome (463808364).

The spelling of 253503012 in words is "two hundred fifty-three million, five hundred three thousand, twelve".