531872887 has 16 divisors (see below), whose sum is σ = 658964992. Its totient is φ = 418024800.

The previous prime is 531872879. The next prime is 531872893. The reversal of 531872887 is 788278135.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 531872887 - 2³ = 531872879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 531872887.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (531872287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5613 + ... + 33094.

It is an arithmetic number, because the mean of its divisors is an integer number (41185312).

Almost surely, 2^531872887 is an apocalyptic number.

531872887 is a deficient number, since it is larger than the sum of its proper divisors (127092105).

531872887 is a wasteful number, since it uses less digits than its factorization.

531872887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38878.

The product of its digits is 752640, while the sum is 49.

The square root of 531872887 is about 23062.3695009858. The cubic root of 531872887 is about 810.2193619157.

The spelling of 531872887 in words is "five hundred thirty-one million, eight hundred seventy-two thousand, eight hundred eighty-seven".