253407878 has 4 divisors (see below), whose sum is σ = 380111820. Its totient is φ = 126703938.

The previous prime is 253407877. The next prime is 253407907. The reversal of 253407878 is 878704352.

It is a happy number.

253407878 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253407877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63351968 + ... + 63351971.

It is an arithmetic number, because the mean of its divisors is an integer number (95027955).

Almost surely, 2^253407878 is an apocalyptic number.

253407878 is a deficient number, since it is larger than the sum of its proper divisors (126703942).

253407878 is a wasteful number, since it uses less digits than its factorization.

253407878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126703941.

The product of its (nonzero) digits is 376320, while the sum is 44.

The square root of 253407878 is about 15918.7900922149. The cubic root of 253407878 is about 632.8100542583.

The spelling of 253407878 in words is "two hundred fifty-three million, four hundred seven thousand, eight hundred seventy-eight".