539521974 has 24 divisors (see below), whose sum is σ = 1209274560. Its totient is φ = 173639088.

The previous prime is 539521973. The next prime is 539521981. The reversal of 539521974 is 479125935.

It is a happy number.

539521974 is a `hidden beast` number, since 5 + 39 + 521 + 97 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539521973) 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 11 ways as a sum of consecutive naturals, for example, 516262 + ... + 517305.

It is an arithmetic number, because the mean of its divisors is an integer number (50386440).

Almost surely, 2^539521974 is an apocalyptic number.

539521974 is an abundant number, since it is smaller than the sum of its proper divisors (669752586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

539521974 is a wasteful number, since it uses less digits than its factorization.

539521974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1033604 (or 1033601 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 539521974 is about 23227.6123181011. The cubic root of 539521974 is about 814.0849247441.

The spelling of 539521974 in words is "five hundred thirty-nine million, five hundred twenty-one thousand, nine hundred seventy-four".