539906531 has 16 divisors (see below), whose sum is σ = 578893824. Its totient is φ = 502348704.

The previous prime is 539906513. The next prime is 539906537. The reversal of 539906531 is 135609935.

It is not a de Polignac number, because 539906531 - 2²⁶ = 472797667 is a prime.

It is a super-2 number, since 2×539906531² = 582998124432907922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (539906537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 185570 + ... + 188456.

It is an arithmetic number, because the mean of its divisors is an integer number (36180864).

Almost surely, 2^539906531 is an apocalyptic number.

539906531 is a deficient number, since it is larger than the sum of its proper divisors (38987293).

539906531 is a wasteful number, since it uses less digits than its factorization.

539906531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130.

The product of its (nonzero) digits is 109350, while the sum is 41.

The square root of 539906531 is about 23235.8888575410. Note that the first 4 decimals coincide. The cubic root of 539906531 is about 814.2782982118.

The spelling of 539906531 in words is "five hundred thirty-nine million, nine hundred six thousand, five hundred thirty-one".