401532052091 has 2 divisors, whose sum is σ = 401532052092. Its totient is φ = 401532052090.

The previous prime is 401532052087. The next prime is 401532052093. The reversal of 401532052091 is 190250235104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401532052091 - 2² = 401532052087 is a prime.

It is a super-2 number, since 2×401532052091² (a number of 24 digits) contains 22 as substring.

Together with 401532052093, 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 (401532052093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200766026045 + 200766026046.

It is an arithmetic number, because the mean of its divisors is an integer number (200766026046).

Almost surely, 2^401532052091 is an apocalyptic number.

401532052091 is a deficient number, since it is larger than the sum of its proper divisors (1).

401532052091 is an equidigital number, since it uses as much as digits as its factorization.

401532052091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 32.

Adding to 401532052091 its reverse (190250235104), we get a palindrome (591782287195).

The spelling of 401532052091 in words is "four hundred one billion, five hundred thirty-two million, fifty-two thousand, ninety-one".