252115401 has 8 divisors (see below), whose sum is σ = 336227584. Its totient is φ = 168040080.

The previous prime is 252115393. The next prime is 252115417. The reversal of 252115401 is 104511252.

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

It is not a de Polignac number, because 252115401 - 2³ = 252115393 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (252115471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19791 + ... + 29931.

It is an arithmetic number, because the mean of its divisors is an integer number (42028448).

Almost surely, 2^252115401 is an apocalyptic number.

It is an amenable number.

252115401 is a deficient number, since it is larger than the sum of its proper divisors (84112183).

252115401 is a wasteful number, since it uses less digits than its factorization.

252115401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18431.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 252115401 is about 15878.1422401993. The cubic root of 252115401 is about 631.7323622757.

Adding to 252115401 its reverse (104511252), we get a palindrome (356626653).

The spelling of 252115401 in words is "two hundred fifty-two million, one hundred fifteen thousand, four hundred one".