531950091 has 4 divisors (see below), whose sum is σ = 709266792. Its totient is φ = 354633392.

The previous prime is 531950047. The next prime is 531950093. The reversal of 531950091 is 190059135.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 531950091 - 2¹⁴ = 531933707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (531950093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88658346 + ... + 88658351.

It is an arithmetic number, because the mean of its divisors is an integer number (177316698).

Almost surely, 2^531950091 is an apocalyptic number.

531950091 is a deficient number, since it is larger than the sum of its proper divisors (177316701).

531950091 is a wasteful number, since it uses less digits than its factorization.

531950091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177316700.

The product of its (nonzero) digits is 6075, while the sum is 33.

The square root of 531950091 is about 23064.0432491790. The cubic root of 531950091 is about 810.2585624784.

The spelling of 531950091 in words is "five hundred thirty-one million, nine hundred fifty thousand, ninety-one".