155064489 has 8 divisors (see below), whose sum is σ = 206886240. Its totient is φ = 103309536.

The previous prime is 155064457. The next prime is 155064517. The reversal of 155064489 is 984460551.

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

It is not a de Polignac number, because 155064489 - 2⁵ = 155064457 is a prime.

It is a super-2 number, since 2×155064489² = 48089991497662242, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 155064489.

It is not an unprimeable number, because it can be changed into a prime (155062489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11004 + ... + 20765.

It is an arithmetic number, because the mean of its divisors is an integer number (25860780).

Almost surely, 2^155064489 is an apocalyptic number.

It is an amenable number.

155064489 is a deficient number, since it is larger than the sum of its proper divisors (51821751).

155064489 is a wasteful number, since it uses less digits than its factorization.

155064489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33399.

The product of its (nonzero) digits is 172800, while the sum is 42.

The square root of 155064489 is about 12452.4892692184. The cubic root of 155064489 is about 537.2430229321.

The spelling of 155064489 in words is "one hundred fifty-five million, sixty-four thousand, four hundred eighty-nine".