531142858 has 4 divisors (see below), whose sum is σ = 796714290. Its totient is φ = 265571428.

The previous prime is 531142831. The next prime is 531142861. The reversal of 531142858 is 858241135.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 858241135 = 5 ⋅171648227.

It can be written as a sum of positive squares in only one way, i.e., 399880009 + 131262849 = 19997^2 + 11457^2 .

It is a super-2 number, since 2×531142858² = 564225471208816328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132785713 + ... + 132785716.

Almost surely, 2^531142858 is an apocalyptic number.

531142858 is a deficient number, since it is larger than the sum of its proper divisors (265571432).

531142858 is a wasteful number, since it uses less digits than its factorization.

531142858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265571431.

The product of its digits is 38400, while the sum is 37.

The square root of 531142858 is about 23046.5367897218. The cubic root of 531142858 is about 809.8484998371.

The spelling of 531142858 in words is "five hundred thirty-one million, one hundred forty-two thousand, eight hundred fifty-eight".