531542061 has 8 divisors (see below), whose sum is σ = 787469760. Its totient is φ = 354361356.

The previous prime is 531542017. The next prime is 531542069. The reversal of 531542061 is 160245135.

531542061 is a `hidden beast` number, since 531 + 54 + 20 + 61 = 666.

It is not a de Polignac number, because 531542061 - 2¹¹ = 531540013 is a prime.

It is a super-2 number, since 2×531542061² = 565073925224255442, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 19686743 = 531542061 / (5 + 3 + 1 + 5 + 4 + 2 + 0 + 6 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531542069) 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 7 ways as a sum of consecutive naturals, for example, 9843345 + ... + 9843398.

It is an arithmetic number, because the mean of its divisors is an integer number (98433720).

Almost surely, 2^531542061 is an apocalyptic number.

It is an amenable number.

531542061 is a deficient number, since it is larger than the sum of its proper divisors (255927699).

531542061 is a wasteful number, since it uses less digits than its factorization.

531542061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19686752 (or 19686746 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 531542061 is about 23055.1959653350. The cubic root of 531542061 is about 810.0513410530.

Adding to 531542061 its reverse (160245135), we get a palindrome (691787196).

The spelling of 531542061 in words is "five hundred thirty-one million, five hundred forty-two thousand, sixty-one".