948581 has 2 divisors, whose sum is σ = 948582. Its totient is φ = 948580.

The previous prime is 948557. The next prime is 948593. The reversal of 948581 is 185849.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 919681 + 28900 = 959^2 + 170^2 .

It is an emirp because it is prime and its reverse (185849) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 948581 - 2⁶ = 948517 is a prime.

It is a super-2 number, since 2×948581² = 1799611827122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (948551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474290 + 474291.

It is an arithmetic number, because the mean of its divisors is an integer number (474291).

2⁹⁴⁸⁵⁸¹ is an apocalyptic number.

It is an amenable number.

948581 is a deficient number, since it is larger than the sum of its proper divisors (1).

948581 is an equidigital number, since it uses as much as digits as its factorization.

948581 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11520, while the sum is 35.

The square root of 948581 is about 973.9512308119. The cubic root of 948581 is about 98.2557874380.

The spelling of 948581 in words is "nine hundred forty-eight thousand, five hundred eighty-one".