253442851 has 8 divisors (see below), whose sum is σ = 270466560. Its totient is φ = 236654208.

The previous prime is 253442831. The next prime is 253442857. The reversal of 253442851 is 158244352.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253442851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253442857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 56536 + ... + 60853.

It is an arithmetic number, because the mean of its divisors is an integer number (33808320).

Almost surely, 2^253442851 is an apocalyptic number.

253442851 is a deficient number, since it is larger than the sum of its proper divisors (17023709).

253442851 is a wasteful number, since it uses less digits than its factorization.

253442851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117533.

The product of its digits is 38400, while the sum is 34.

The square root of 253442851 is about 15919.8885360420. Note that the first 3 decimals coincide. The cubic root of 253442851 is about 632.8391644398.

The spelling of 253442851 in words is "two hundred fifty-three million, four hundred forty-two thousand, eight hundred fifty-one".