251284097 has 2 divisors, whose sum is σ = 251284098. Its totient is φ = 251284096.

The previous prime is 251284091. The next prime is 251284133. The reversal of 251284097 is 790482152.

251284097 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130965136 + 120318961 = 11444^2 + 10969^2 .

It is a cyclic number.

It is not a de Polignac number, because 251284097 - 2⁴ = 251284081 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 251284097.

It is not a weakly prime, because it can be changed into another prime (251284091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125642048 + 125642049.

It is an arithmetic number, because the mean of its divisors is an integer number (125642049).

Almost surely, 2^251284097 is an apocalyptic number.

It is an amenable number.

251284097 is a deficient number, since it is larger than the sum of its proper divisors (1).

251284097 is an equidigital number, since it uses as much as digits as its factorization.

251284097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 251284097 is about 15851.9430039349. The cubic root of 251284097 is about 631.0372574346.

The spelling of 251284097 in words is "two hundred fifty-one million, two hundred eighty-four thousand, ninety-seven".