253551249 has 32 divisors (see below), whose sum is σ = 435722240. Its totient is φ = 142716816.

The previous prime is 253551247. The next prime is 253551251. The reversal of 253551249 is 942155352.

It is a happy number.

253551249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (253551247) and next prime (253551251).

It is not a de Polignac number, because 253551249 - 2¹ = 253551247 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253551247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2652 + ... + 22674.

It is an arithmetic number, because the mean of its divisors is an integer number (13616320).

Almost surely, 2^253551249 is an apocalyptic number.

It is an amenable number.

253551249 is a deficient number, since it is larger than the sum of its proper divisors (182170991).

253551249 is a wasteful number, since it uses less digits than its factorization.

253551249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20106 (or 20100 counting only the distinct ones).

The product of its digits is 54000, while the sum is 36.

The square root of 253551249 is about 15923.2926557292. The cubic root of 253551249 is about 632.9293737604.

The spelling of 253551249 in words is "two hundred fifty-three million, five hundred fifty-one thousand, two hundred forty-nine".