906161261 has 2 divisors, whose sum is σ = 906161262. Its totient is φ = 906161260.

The previous prime is 906161209. The next prime is 906161273. The reversal of 906161261 is 162161609.

906161261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 892515625 + 13645636 = 29875^2 + 3694^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-906161261 is a prime.

It is a super-2 number, since 2×906161261² = 1642256461874220242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (906161461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 453080630 + 453080631.

It is an arithmetic number, because the mean of its divisors is an integer number (453080631).

Almost surely, 2^906161261 is an apocalyptic number.

It is an amenable number.

906161261 is a deficient number, since it is larger than the sum of its proper divisors (1).

906161261 is an equidigital number, since it uses as much as digits as its factorization.

906161261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 906161261 is about 30102.5125363316. The cubic root of 906161261 is about 967.6875731285.

The spelling of 906161261 in words is "nine hundred six million, one hundred sixty-one thousand, two hundred sixty-one".