539138601 has 12 divisors (see below), whose sum is σ = 796866928. Its totient is φ = 351066744.

The previous prime is 539138599. The next prime is 539138603. The reversal of 539138601 is 106831935.

It is a happy number.

539138601 is a `hidden beast` number, since 5 + 39 + 13 + 8 + 601 = 666.

It is an interprime number because it is at equal distance from previous prime (539138599) and next prime (539138603).

It is not a de Polignac number, because 539138601 - 2¹ = 539138599 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (539138603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 696175 + ... + 696948.

Almost surely, 2^539138601 is an apocalyptic number.

It is an amenable number.

539138601 is a deficient number, since it is larger than the sum of its proper divisors (257728327).

539138601 is a wasteful number, since it uses less digits than its factorization.

539138601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1393172 (or 1393169 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 539138601 is about 23219.3583244671. The cubic root of 539138601 is about 813.8920551623.

The spelling of 539138601 in words is "five hundred thirty-nine million, one hundred thirty-eight thousand, six hundred one".