1051291273 has 2 divisors, whose sum is σ = 1051291274. Its totient is φ = 1051291272.

The previous prime is 1051291247. The next prime is 1051291277. The reversal of 1051291273 is 3721921501.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 568917904 + 482373369 = 23852^2 + 21963^2 .

It is a cyclic number.

It is not a de Polignac number, because 1051291273 - 2²¹ = 1049194121 is a prime.

It is a super-2 number, since 2×1051291273² = 2210426681371921058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1051291277) 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, 525645636 + 525645637.

It is an arithmetic number, because the mean of its divisors is an integer number (525645637).

Almost surely, 2^1051291273 is an apocalyptic number.

It is an amenable number.

1051291273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1051291273 is an equidigital number, since it uses as much as digits as its factorization.

1051291273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 1051291273 is about 32423.6221449733. The cubic root of 1051291273 is about 1016.8128353965.

The spelling of 1051291273 in words is "one billion, fifty-one million, two hundred ninety-one thousand, two hundred seventy-three".