1071952261 has 2 divisors, whose sum is σ = 1071952262. Its totient is φ = 1071952260.

The previous prime is 1071952247. The next prime is 1071952291. The reversal of 1071952261 is 1622591701.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 827655361 + 244296900 = 28769^2 + 15630^2 .

It is an emirp because it is prime and its reverse (1622591701) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1071952261 is a prime.

It is a super-2 number, since 2×1071952261² = 2298163299726024242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1071952291) 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, 535976130 + 535976131.

It is an arithmetic number, because the mean of its divisors is an integer number (535976131).

Almost surely, 2^1071952261 is an apocalyptic number.

It is an amenable number.

1071952261 is a deficient number, since it is larger than the sum of its proper divisors (1).

1071952261 is an equidigital number, since it uses as much as digits as its factorization.

1071952261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 34.

The square root of 1071952261 is about 32740.6820484852. The cubic root of 1071952261 is about 1023.4307969031.

The spelling of 1071952261 in words is "one billion, seventy-one million, nine hundred fifty-two thousand, two hundred sixty-one".