291461201 has 2 divisors, whose sum is σ = 291461202. Its totient is φ = 291461200.

The previous prime is 291461167. The next prime is 291461227. The reversal of 291461201 is 102164192.

It is an a-pointer prime, because the next prime (291461227) can be obtained adding 291461201 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213598225 + 77862976 = 14615^2 + 8824^2 .

It is a cyclic number.

It is not a de Polignac number, because 291461201 - 2¹⁸ = 291199057 is a prime.

It is not a weakly prime, because it can be changed into another prime (291431201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145730600 + 145730601.

It is an arithmetic number, because the mean of its divisors is an integer number (145730601).

Almost surely, 2^291461201 is an apocalyptic number.

It is an amenable number.

291461201 is a deficient number, since it is larger than the sum of its proper divisors (1).

291461201 is an equidigital number, since it uses as much as digits as its factorization.

291461201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 291461201 is about 17072.2347980573. The cubic root of 291461201 is about 663.0204390885.

The spelling of 291461201 in words is "two hundred ninety-one million, four hundred sixty-one thousand, two hundred one".