165461047 has 2 divisors, whose sum is σ = 165461048. Its totient is φ = 165461046.

The previous prime is 165460993. The next prime is 165461053. The reversal of 165461047 is 740164561.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-165461047 is a prime.

It is equal to p_9263239 and since 165461047 and 9263239 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 (165431047) 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, 82730523 + 82730524.

It is an arithmetic number, because the mean of its divisors is an integer number (82730524).

Almost surely, 2^165461047 is an apocalyptic number.

165461047 is a deficient number, since it is larger than the sum of its proper divisors (1).

165461047 is an equidigital number, since it uses as much as digits as its factorization.

165461047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 165461047 is about 12863.1662898370. The cubic root of 165461047 is about 548.9910394765.

The spelling of 165461047 in words is "one hundred sixty-five million, four hundred sixty-one thousand, forty-seven".