251252213 has 8 divisors (see below), whose sum is σ = 254542848. Its totient is φ = 247976064.

The previous prime is 251252191. The next prime is 251252233. The reversal of 251252213 is 312252152.

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

It is a cyclic number.

It is not a de Polignac number, because 251252213 - 2²⁴ = 234474997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (251252233) 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, 33770 + ... + 40532.

It is an arithmetic number, because the mean of its divisors is an integer number (31817856).

Almost surely, 2^251252213 is an apocalyptic number.

It is an amenable number.

251252213 is a deficient number, since it is larger than the sum of its proper divisors (3290635).

251252213 is an equidigital number, since it uses as much as digits as its factorization.

251252213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7243.

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

The square root of 251252213 is about 15850.9372908986. The cubic root of 251252213 is about 631.0105667378.

The spelling of 251252213 in words is "two hundred fifty-one million, two hundred fifty-two thousand, two hundred thirteen".