155580849 has 6 divisors (see below), whose sum is σ = 224727906. Its totient is φ = 103720560.

The previous prime is 155580827. The next prime is 155580863. The reversal of 155580849 is 948085551.

It is a happy number.

155580849 is a `hidden beast` number, since 15 + 558 + 0 + 84 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 133818624 + 21762225 = 11568^2 + 4665^2 .

It is not a de Polignac number, because 155580849 - 2¹² = 155576753 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155581849) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8643372 + ... + 8643389.

It is an arithmetic number, because the mean of its divisors is an integer number (37454651).

Almost surely, 2^155580849 is an apocalyptic number.

It is an amenable number.

155580849 is a deficient number, since it is larger than the sum of its proper divisors (69147057).

155580849 is a wasteful number, since it uses less digits than its factorization.

155580849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17286767 (or 17286764 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 155580849 is about 12473.2052416370. The cubic root of 155580849 is about 537.8386965007.

The spelling of 155580849 in words is "one hundred fifty-five million, five hundred eighty thousand, eight hundred forty-nine".