253878001 has 4 divisors (see below), whose sum is σ = 273407092. Its totient is φ = 234348912.

The previous prime is 253877999. The next prime is 253878041. The reversal of 253878001 is 100878352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 149817600 + 104060401 = 12240^2 + 10201^2 .

It is a cyclic number.

It is not a de Polignac number, because 253878001 - 2¹ = 253877999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253878041) 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 3 ways as a sum of consecutive naturals, for example, 9764526 + ... + 9764551.

It is an arithmetic number, because the mean of its divisors is an integer number (68351773).

Almost surely, 2^253878001 is an apocalyptic number.

It is an amenable number.

253878001 is a deficient number, since it is larger than the sum of its proper divisors (19529091).

253878001 is a wasteful number, since it uses less digits than its factorization.

253878001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19529090.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 253878001 is about 15933.5495417688. The cubic root of 253878001 is about 633.2011428325.

The spelling of 253878001 in words is "two hundred fifty-three million, eight hundred seventy-eight thousand, one".