253095978 has 8 divisors (see below), whose sum is σ = 506191968. Its totient is φ = 84365324.

The previous prime is 253095971. The next prime is 253096003. The reversal of 253095978 is 879590352.

It is a happy number.

253095978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

253095978 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (253095971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21091326 + ... + 21091337.

It is an arithmetic number, because the mean of its divisors is an integer number (63273996).

Almost surely, 2^253095978 is an apocalyptic number.

253095978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

253095978 is a wasteful number, since it uses less digits than its factorization.

253095978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42182668.

The product of its (nonzero) digits is 680400, while the sum is 48.

The square root of 253095978 is about 15908.9904770856. The cubic root of 253095978 is about 632.5503221483.

The spelling of 253095978 in words is "two hundred fifty-three million, ninety-five thousand, nine hundred seventy-eight".