253536378 has 16 divisors (see below), whose sum is σ = 507374496. Its totient is φ = 84461840.

The previous prime is 253536329. The next prime is 253536389. The reversal of 253536378 is 873635352.

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, 801 + ... + 22532.

It is an arithmetic number, because the mean of its divisors is an integer number (31710906).

Almost surely, 2^253536378 is an apocalyptic number.

253536378 is an abundant number, since it is smaller than the sum of its proper divisors (253838118).

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

253536378 is a wasteful number, since it uses less digits than its factorization.

253536378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25149.

The product of its digits is 453600, while the sum is 42.

The square root of 253536378 is about 15922.8256914406. The cubic root of 253536378 is about 632.9169995668.

The spelling of 253536378 in words is "two hundred fifty-three million, five hundred thirty-six thousand, three hundred seventy-eight".