155332489 has 4 divisors (see below), whose sum is σ = 167281156. Its totient is φ = 143383824.

The previous prime is 155332481. The next prime is 155332511. The reversal of 155332489 is 984233551.

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

It can be written as a sum of positive squares in 2 ways, for example, as 68227600 + 87104889 = 8260^2 + 9333^2 .

It is a cyclic number.

It is not a de Polignac number, because 155332489 - 2³ = 155332481 is a prime.

It is a super-3 number, since 3×155332489³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155332481) 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, 5974314 + ... + 5974339.

It is an arithmetic number, because the mean of its divisors is an integer number (41820289).

Almost surely, 2^155332489 is an apocalyptic number.

It is an amenable number.

155332489 is a deficient number, since it is larger than the sum of its proper divisors (11948667).

155332489 is a wasteful number, since it uses less digits than its factorization.

155332489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11948666.

The product of its digits is 129600, while the sum is 40.

The square root of 155332489 is about 12463.2455243408. The cubic root of 155332489 is about 537.5523528599.

The spelling of 155332489 in words is "one hundred fifty-five million, three hundred thirty-two thousand, four hundred eighty-nine".