149559 has 4 divisors (see below), whose sum is σ = 199416. Its totient is φ = 99704.

The previous prime is 149551. The next prime is 149561. The reversal of 149559 is 955941.

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 149559 - 2³ = 149551 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149551) 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, 24924 + ... + 24929.

It is an arithmetic number, because the mean of its divisors is an integer number (49854).

2¹⁴⁹⁵⁵⁹ is an apocalyptic number.

149559 is a deficient number, since it is larger than the sum of its proper divisors (49857).

149559 is an equidigital number, since it uses as much as digits as its factorization.

149559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49856.

The product of its digits is 8100, while the sum is 33.

The square root of 149559 is about 386.7285869961. The cubic root of 149559 is about 53.0808070769.

The spelling of 149559 in words is "one hundred forty-nine thousand, five hundred fifty-nine".