253401215 has 8 divisors (see below), whose sum is σ = 309819168. Its totient is φ = 198895840.

The previous prime is 253401209. The next prime is 253401251. The reversal of 253401215 is 512104352.

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

It is not a de Polignac number, because 253401215 - 2⁴ = 253401199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 477851 + ... + 478380.

It is an arithmetic number, because the mean of its divisors is an integer number (38727396).

Almost surely, 2^253401215 is an apocalyptic number.

253401215 is a deficient number, since it is larger than the sum of its proper divisors (56417953).

253401215 is an equidigital number, since it uses as much as digits as its factorization.

253401215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956289.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 253401215 is about 15918.5808098586. The cubic root of 253401215 is about 632.8045079293.

Adding to 253401215 its reverse (512104352), we get a palindrome (765505567).

The spelling of 253401215 in words is "two hundred fifty-three million, four hundred one thousand, two hundred fifteen".