153539 has 4 divisors (see below), whose sum is σ = 161640. Its totient is φ = 145440.

The previous prime is 153533. The next prime is 153557. The reversal of 153539 is 935351.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 153539 - 2⁴ = 153523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (153533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4022 + ... + 4059.

It is an arithmetic number, because the mean of its divisors is an integer number (40410).

2¹⁵³⁵³⁹ is an apocalyptic number.

153539 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

153539 is a deficient number, since it is larger than the sum of its proper divisors (8101).

153539 is an equidigital number, since it uses as much as digits as its factorization.

153539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8100.

The product of its digits is 2025, while the sum is 26.

The square root of 153539 is about 391.8405287869. The cubic root of 153539 is about 53.5475455870.

The spelling of 153539 in words is "one hundred fifty-three thousand, five hundred thirty-nine".