251061059 has 2 divisors, whose sum is σ = 251061060. Its totient is φ = 251061058.

The previous prime is 251061037. The next prime is 251061067. The reversal of 251061059 is 950160152.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 251061059 - 2¹² = 251056963 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (251061359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 125530529 + 125530530.

It is an arithmetic number, because the mean of its divisors is an integer number (125530530).

Almost surely, 2^251061059 is an apocalyptic number.

251061059 is a deficient number, since it is larger than the sum of its proper divisors (1).

251061059 is an equidigital number, since it uses as much as digits as its factorization.

251061059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2700, while the sum is 29.

The square root of 251061059 is about 15844.9064055298. The cubic root of 251061059 is about 630.8505007562.

The spelling of 251061059 in words is "two hundred fifty-one million, sixty-one thousand, fifty-nine".