253642555 has 8 divisors (see below), whose sum is σ = 314866800. Its totient is φ = 195916896.

The previous prime is 253642553. The next prime is 253642559. The reversal of 253642555 is 555246352.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 253642555 - 2¹ = 253642553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253642553) 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 7 ways as a sum of consecutive naturals, for example, 874485 + ... + 874774.

It is an arithmetic number, because the mean of its divisors is an integer number (39358350).

Almost surely, 2^253642555 is an apocalyptic number.

253642555 is a deficient number, since it is larger than the sum of its proper divisors (61224245).

253642555 is a wasteful number, since it uses less digits than its factorization.

253642555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749293.

The product of its digits is 180000, while the sum is 37.

The square root of 253642555 is about 15926.1594554368. The cubic root of 253642555 is about 633.0053390916.

The spelling of 253642555 in words is "two hundred fifty-three million, six hundred forty-two thousand, five hundred fifty-five".