531042261 has 8 divisors (see below), whose sum is σ = 708272064. Its totient is φ = 353920320.

The previous prime is 531042247. The next prime is 531042269. The reversal of 531042261 is 162240135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 531042261 - 2¹³ = 531034069 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531042269) 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 in 7 ways as a sum of consecutive naturals, for example, 14676 + ... + 35741.

It is an arithmetic number, because the mean of its divisors is an integer number (88534008).

Almost surely, 2^531042261 is an apocalyptic number.

It is an amenable number.

531042261 is a deficient number, since it is larger than the sum of its proper divisors (177229803).

531042261 is a wasteful number, since it uses less digits than its factorization.

531042261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53931.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 531042261 is about 23044.3542109559. The cubic root of 531042261 is about 809.7973689143.

Adding to 531042261 its reverse (162240135), we get a palindrome (693282396).

The spelling of 531042261 in words is "five hundred thirty-one million, forty-two thousand, two hundred sixty-one".