253542220 has 12 divisors (see below), whose sum is σ = 532438704. Its totient is φ = 101416880.

The previous prime is 253542217. The next prime is 253542227. The reversal of 253542220 is 22245352.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (253542227) 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 3 ways as a sum of consecutive naturals, for example, 6338536 + ... + 6338575.

It is an arithmetic number, because the mean of its divisors is an integer number (44369892).

Almost surely, 2^253542220 is an apocalyptic number.

253542220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253542220 is an abundant number, since it is smaller than the sum of its proper divisors (278896484).

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

253542220 is a wasteful number, since it uses less digits than its factorization.

253542220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12677120 (or 12677118 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

The square root of 253542220 is about 15923.0091377227. The cubic root of 253542220 is about 632.9218607662.

Adding to 253542220 its reverse (22245352), we get a palindrome (275787572).

The spelling of 253542220 in words is "two hundred fifty-three million, five hundred forty-two thousand, two hundred twenty".