855602441 has 2 divisors, whose sum is σ = 855602442. Its totient is φ = 855602440.

The previous prime is 855602437. The next prime is 855602443. The reversal of 855602441 is 144206558.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 852348025 + 3254416 = 29195^2 + 1804^2 .

It is a cyclic number.

It is not a de Polignac number, because 855602441 - 2² = 855602437 is a prime.

It is a super-3 number, since 3×855602441³ (a number of 28 digits) contains 333 as substring.

Together with 855602443, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (855602443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 427801220 + 427801221.

It is an arithmetic number, because the mean of its divisors is an integer number (427801221).

Almost surely, 2^855602441 is an apocalyptic number.

It is an amenable number.

855602441 is a deficient number, since it is larger than the sum of its proper divisors (1).

855602441 is an equidigital number, since it uses as much as digits as its factorization.

855602441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38400, while the sum is 35.

The square root of 855602441 is about 29250.6827441686. The cubic root of 855602441 is about 949.3448635459.

Adding to 855602441 its reverse (144206558), we get a palindrome (999808999).

The spelling of 855602441 in words is "eight hundred fifty-five million, six hundred two thousand, four hundred forty-one".