251252433 has 12 divisors (see below), whose sum is σ = 375435060. Its totient is φ = 161725536.

The previous prime is 251252423. The next prime is 251252461. The reversal of 251252433 is 334252152.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 92794689 + 158457744 = 9633^2 + 12588^2 .

It is not a de Polignac number, because 251252433 - 2¹⁰ = 251251409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251252397 and 251252406.

It is not an unprimeable number, because it can be changed into a prime (251252413) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 481066 + ... + 481587.

It is an arithmetic number, because the mean of its divisors is an integer number (31286255).

Almost surely, 2^251252433 is an apocalyptic number.

It is an amenable number.

251252433 is a deficient number, since it is larger than the sum of its proper divisors (124182627).

251252433 is a wasteful number, since it uses less digits than its factorization.

251252433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 962688 (or 962685 counting only the distinct ones).

The product of its digits is 7200, while the sum is 27.

The square root of 251252433 is about 15850.9442305498. The cubic root of 251252433 is about 631.0107509117.

It can be divided in two parts, 2512 and 52433, that added together give a palindrome (54945).

The spelling of 251252433 in words is "two hundred fifty-one million, two hundred fifty-two thousand, four hundred thirty-three".