251130041 has 8 divisors (see below), whose sum is σ = 252603624. Its totient is φ = 249661440.

The previous prime is 251130037. The next prime is 251130073. The reversal of 251130041 is 140031152.

It can be written as a sum of positive squares in 4 ways, for example, as 7645225 + 243484816 = 2765^2 + 15604^2 .

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 251130041 - 2² = 251130037 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251130241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145061 + ... + 146781.

It is an arithmetic number, because the mean of its divisors is an integer number (31575453).

Almost surely, 2^251130041 is an apocalyptic number.

It is an amenable number.

251130041 is a deficient number, since it is larger than the sum of its proper divisors (1473583).

251130041 is a wasteful number, since it uses less digits than its factorization.

251130041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2491.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 251130041 is about 15847.0830438917. The cubic root of 251130041 is about 630.9082733480.

Adding to 251130041 its reverse (140031152), we get a palindrome (391161193).

The spelling of 251130041 in words is "two hundred fifty-one million, one hundred thirty thousand, forty-one".