531949133801 has 2 divisors, whose sum is σ = 531949133802. Its totient is φ = 531949133800.

The previous prime is 531949133773. The next prime is 531949133873. The reversal of 531949133801 is 108331949135.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 516995512576 + 14953621225 = 719024^2 + 122285^2 .

It is a cyclic number.

It is not a de Polignac number, because 531949133801 - 2²⁶ = 531882024937 is a prime.

It is not a weakly prime, because it can be changed into another prime (531949133101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 265974566900 + 265974566901.

It is an arithmetic number, because the mean of its divisors is an integer number (265974566901).

Almost surely, 2^531949133801 is an apocalyptic number.

It is an amenable number.

531949133801 is a deficient number, since it is larger than the sum of its proper divisors (1).

531949133801 is an equidigital number, since it uses as much as digits as its factorization.

531949133801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 349920, while the sum is 47.

The spelling of 531949133801 in words is "five hundred thirty-one billion, nine hundred forty-nine million, one hundred thirty-three thousand, eight hundred one".