253742245 has 16 divisors (see below), whose sum is σ = 320912640. Its totient is φ = 192072384.

The previous prime is 253742243. The next prime is 253742267. The reversal of 253742245 is 542247352.

It is a cyclic number.

It is not a de Polignac number, because 253742245 - 2¹ = 253742243 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253742245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253742243) 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 15 ways as a sum of consecutive naturals, for example, 134247 + ... + 136123.

It is an arithmetic number, because the mean of its divisors is an integer number (20057040).

Almost surely, 2^253742245 is an apocalyptic number.

It is an amenable number.

253742245 is a deficient number, since it is larger than the sum of its proper divisors (67170395).

253742245 is a wasteful number, since it uses less digits than its factorization.

253742245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3324.

The product of its digits is 67200, while the sum is 34.

The square root of 253742245 is about 15929.2889044050. The cubic root of 253742245 is about 633.0882589796.

Adding to 253742245 its reverse (542247352), we get a palindrome (795989597).

The spelling of 253742245 in words is "two hundred fifty-three million, seven hundred forty-two thousand, two hundred forty-five".