401405520533 has 2 divisors, whose sum is σ = 401405520534. Its totient is φ = 401405520532.

The previous prime is 401405520499. The next prime is 401405520547. The reversal of 401405520533 is 335025504104.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 378739314724 + 22666205809 = 615418^2 + 150553^2 .

It is a cyclic number.

It is not a de Polignac number, because 401405520533 - 2⁶ = 401405520469 is a prime.

It is a super-2 number, since 2×401405520533² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401405520533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401405520433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200702760266 + 200702760267.

It is an arithmetic number, because the mean of its divisors is an integer number (200702760267).

Almost surely, 2^401405520533 is an apocalyptic number.

It is an amenable number.

401405520533 is a deficient number, since it is larger than the sum of its proper divisors (1).

401405520533 is an equidigital number, since it uses as much as digits as its factorization.

401405520533 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36000, while the sum is 32.

The spelling of 401405520533 in words is "four hundred one billion, four hundred five million, five hundred twenty thousand, five hundred thirty-three".