91161461 has 2 divisors, whose sum is σ = 91161462. Its totient is φ = 91161460.

The previous prime is 91161439. The next prime is 91161481. The reversal of 91161461 is 16416119.

91161461 is nontrivially palindromic in base 9.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74063236 + 17098225 = 8606^2 + 4135^2 .

It is an emirp because it is prime and its reverse (16416119) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 91161461 - 2¹⁰ = 91160437 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is equal to p_5280446 and since 91161461 and 5280446 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (91161401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45580730 + 45580731.

It is an arithmetic number, because the mean of its divisors is an integer number (45580731).

Almost surely, 2^91161461 is an apocalyptic number.

It is an amenable number.

91161461 is a deficient number, since it is larger than the sum of its proper divisors (1).

91161461 is an equidigital number, since it uses as much as digits as its factorization.

91161461 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 29.

The square root of 91161461 is about 9547.8511194928. The cubic root of 91161461 is about 450.0600101039.

The spelling of 91161461 in words is "ninety-one million, one hundred sixty-one thousand, four hundred sixty-one".