531047126 has 4 divisors (see below), whose sum is σ = 796570692. Its totient is φ = 265523562.

The previous prime is 531047113. The next prime is 531047147. The reversal of 531047126 is 621740135.

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

It is a super-2 number, since 2×531047126² = 564022100065719752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 132761780 + ... + 132761783.

It is an arithmetic number, because the mean of its divisors is an integer number (199142673).

Almost surely, 2^531047126 is an apocalyptic number.

531047126 is a deficient number, since it is larger than the sum of its proper divisors (265523566).

531047126 is a wasteful number, since it uses less digits than its factorization.

531047126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265523565.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 531047126 is about 23044.4597680223. The cubic root of 531047126 is about 809.7998418199.

The spelling of 531047126 in words is "five hundred thirty-one million, forty-seven thousand, one hundred twenty-six".