539508021 has 32 divisors (see below), whose sum is σ = 818912640. Its totient is φ = 313196544.

The previous prime is 539508007. The next prime is 539508037. The reversal of 539508021 is 120805935.

It is not a de Polignac number, because 539508021 - 2⁶ = 539507957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539508061) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189021 + ... + 191853.

It is an arithmetic number, because the mean of its divisors is an integer number (25591020).

Almost surely, 2^539508021 is an apocalyptic number.

It is an amenable number.

539508021 is a deficient number, since it is larger than the sum of its proper divisors (279404619).

539508021 is a wasteful number, since it uses less digits than its factorization.

539508021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3125.

The product of its (nonzero) digits is 10800, while the sum is 33.

The square root of 539508021 is about 23227.3119624291. The cubic root of 539508021 is about 814.0779067878.

The spelling of 539508021 in words is "five hundred thirty-nine million, five hundred eight thousand, twenty-one".