253453540 has 24 divisors (see below), whose sum is σ = 560266560. Its totient is φ = 96045408.

The previous prime is 253453523. The next prime is 253453609. The reversal of 253453540 is 45354352.

It is a happy number.

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, 333112 + ... + 333871.

It is an arithmetic number, because the mean of its divisors is an integer number (23344440).

Almost surely, 2^253453540 is an apocalyptic number.

253453540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253453540 is an abundant number, since it is smaller than the sum of its proper divisors (306813020).

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

253453540 is a wasteful number, since it uses less digits than its factorization.

253453540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667011 (or 667009 counting only the distinct ones).

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

The square root of 253453540 is about 15920.2242446518. The cubic root of 253453540 is about 632.8480610184.

The spelling of 253453540 in words is "two hundred fifty-three million, four hundred fifty-three thousand, five hundred forty".