539145381 has 8 divisors (see below), whose sum is σ = 719852224. Its totient is φ = 358934400.

The previous prime is 539145377. The next prime is 539145391. The reversal of 539145381 is 183541935.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 539145381 - 2² = 539145377 is a prime.

It is a super-2 number, since 2×539145381² = 581355483707270322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (539145391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121420 + ... + 125781.

It is an arithmetic number, because the mean of its divisors is an integer number (89981528).

Almost surely, 2^539145381 is an apocalyptic number.

It is an amenable number.

539145381 is a deficient number, since it is larger than the sum of its proper divisors (180706843).

539145381 is a wasteful number, since it uses less digits than its factorization.

539145381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247931.

The product of its digits is 64800, while the sum is 39.

The square root of 539145381 is about 23219.5043228748. The cubic root of 539145381 is about 813.8954668793.

It can be divided in two parts, 53914 and 5381, that added together give a palindrome (59295).

The spelling of 539145381 in words is "five hundred thirty-nine million, one hundred forty-five thousand, three hundred eighty-one".