857440601 has 2 divisors, whose sum is σ = 857440602. Its totient is φ = 857440600.

The previous prime is 857440561. The next prime is 857440631. The reversal of 857440601 is 106044758.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 774174976 + 83265625 = 27824^2 + 9125^2 .

It is a cyclic number.

It is not a de Polignac number, because 857440601 - 2²² = 853246297 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (857440631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 428720300 + 428720301.

It is an arithmetic number, because the mean of its divisors is an integer number (428720301).

Almost surely, 2^857440601 is an apocalyptic number.

It is an amenable number.

857440601 is a deficient number, since it is larger than the sum of its proper divisors (1).

857440601 is an equidigital number, since it uses as much as digits as its factorization.

857440601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 26880, while the sum is 35.

The square root of 857440601 is about 29282.0866913545. The cubic root of 857440601 is about 950.0242287449.

The spelling of 857440601 in words is "eight hundred fifty-seven million, four hundred forty thousand, six hundred one".