401536081 has 2 divisors, whose sum is σ = 401536082. Its totient is φ = 401536080.

The previous prime is 401536043. The next prime is 401536129. The reversal of 401536081 is 180635104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 340070481 + 61465600 = 18441^2 + 7840^2 .

It is a cyclic number.

It is not a de Polignac number, because 401536081 - 2¹⁵ = 401503313 is a prime.

It is a super-2 number, since 2×401536081² = 322462448689677122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401536781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200768040 + 200768041.

It is an arithmetic number, because the mean of its divisors is an integer number (200768041).

Almost surely, 2^401536081 is an apocalyptic number.

It is an amenable number.

401536081 is a deficient number, since it is larger than the sum of its proper divisors (1).

401536081 is an equidigital number, since it uses as much as digits as its factorization.

401536081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 401536081 is about 20038.3652277325. The cubic root of 401536081 is about 737.7482567845.

The spelling of 401536081 in words is "four hundred one million, five hundred thirty-six thousand, eighty-one".