532161531 has 48 divisors (see below), whose sum is σ = 869925888. Its totient is φ = 310564800.

The previous prime is 532161529. The next prime is 532161547. The reversal of 532161531 is 135161235.

532161531 is a `hidden beast` number, since 53 + 21 + 61 + 531 = 666.

It is not a de Polignac number, because 532161531 - 2¹ = 532161529 is a prime.

It is a super-2 number, since 2×532161531² = 566391790152527922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 532161495 and 532161504.

It is not an unprimeable number, because it can be changed into a prime (532161521) 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 47 ways as a sum of consecutive naturals, for example, 972600 + ... + 973146.

It is an arithmetic number, because the mean of its divisors is an integer number (18123456).

Almost surely, 2^532161531 is an apocalyptic number.

532161531 is a deficient number, since it is larger than the sum of its proper divisors (337764357).

532161531 is a wasteful number, since it uses less digits than its factorization.

532161531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 912 (or 909 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 532161531 is about 23068.6265520945. The cubic root of 532161531 is about 810.3659023582.

The spelling of 532161531 in words is "five hundred thirty-two million, one hundred sixty-one thousand, five hundred thirty-one".