531090998 has 4 divisors (see below), whose sum is σ = 796636500. Its totient is φ = 265545498.

The previous prime is 531090997. The next prime is 531091051. The reversal of 531090998 is 899090135.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531090991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132772748 + ... + 132772751.

It is an arithmetic number, because the mean of its divisors is an integer number (199159125).

Almost surely, 2^531090998 is an apocalyptic number.

531090998 is a deficient number, since it is larger than the sum of its proper divisors (265545502).

531090998 is a wasteful number, since it uses less digits than its factorization.

531090998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265545501.

The product of its (nonzero) digits is 87480, while the sum is 44.

The square root of 531090998 is about 23045.4116474408. The cubic root of 531090998 is about 809.8221415109.

The spelling of 531090998 in words is "five hundred thirty-one million, ninety thousand, nine hundred ninety-eight".