53142539 has 8 divisors (see below), whose sum is σ = 55302720. Its totient is φ = 51024456.

The previous prime is 53142511. The next prime is 53142547. The reversal of 53142539 is 93524135.

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

It is a cyclic number.

It is not a de Polignac number, because 53142539 - 2⁸ = 53142283 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53142599) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7937 + ... + 13010.

It is an arithmetic number, because the mean of its divisors is an integer number (6912840).

Almost surely, 2^53142539 is an apocalyptic number.

53142539 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

53142539 is a deficient number, since it is larger than the sum of its proper divisors (2160181).

53142539 is a wasteful number, since it uses less digits than its factorization.

53142539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21049.

The product of its digits is 16200, while the sum is 32.

The square root of 53142539 is about 7289.8929347419. The cubic root of 53142539 is about 375.9650143810.

The spelling of 53142539 in words is "fifty-three million, one hundred forty-two thousand, five hundred thirty-nine".