401579081 has 2 divisors, whose sum is σ = 401579082. Its totient is φ = 401579080.

The previous prime is 401579029. The next prime is 401579119. The reversal of 401579081 is 180975104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350026681 + 51552400 = 18709^2 + 7180^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401579081 is a prime.

It is a super-2 number, since 2×401579081² = 322531516593609122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (401579281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200789540 + 200789541.

It is an arithmetic number, because the mean of its divisors is an integer number (200789541).

Almost surely, 2^401579081 is an apocalyptic number.

It is an amenable number.

401579081 is a deficient number, since it is larger than the sum of its proper divisors (1).

401579081 is an equidigital number, since it uses as much as digits as its factorization.

401579081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The square root of 401579081 is about 20039.4381408262. The cubic root of 401579081 is about 737.7745906926.

The spelling of 401579081 in words is "four hundred one million, five hundred seventy-nine thousand, eighty-one".