251262133 has 2 divisors, whose sum is σ = 251262134. Its totient is φ = 251262132.

The previous prime is 251262103. The next prime is 251262163. The reversal of 251262133 is 331262152.

It is a balanced prime because it is at equal distance from previous prime (251262103) and next prime (251262163).

It can be written as a sum of positive squares in only one way, i.e., 181656484 + 69605649 = 13478^2 + 8343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-251262133 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 251262098 and 251262107.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (251262103) 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 as a sum of consecutive naturals, namely, 125631066 + 125631067.

It is an arithmetic number, because the mean of its divisors is an integer number (125631067).

Almost surely, 2^251262133 is an apocalyptic number.

It is an amenable number.

251262133 is a deficient number, since it is larger than the sum of its proper divisors (1).

251262133 is an equidigital number, since it uses as much as digits as its factorization.

251262133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2160, while the sum is 25.

The square root of 251262133 is about 15851.2502030597. The cubic root of 251262133 is about 631.0188711985.

The spelling of 251262133 in words is "two hundred fifty-one million, two hundred sixty-two thousand, one hundred thirty-three".