155575949 has 8 divisors (see below), whose sum is σ = 161432832. Its totient is φ = 149771520.

The previous prime is 155575909. The next prime is 155575961. The reversal of 155575949 is 949575551.

155575949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-155575949 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155575897 and 155575906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155575909) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7019 + ... + 18984.

It is an arithmetic number, because the mean of its divisors is an integer number (20179104).

Almost surely, 2^155575949 is an apocalyptic number.

It is an amenable number.

155575949 is a deficient number, since it is larger than the sum of its proper divisors (5856883).

155575949 is a wasteful number, since it uses less digits than its factorization.

155575949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26227.

The product of its digits is 1417500, while the sum is 50.

The square root of 155575949 is about 12473.0088190460. The cubic root of 155575949 is about 537.8330500532.

The spelling of 155575949 in words is "one hundred fifty-five million, five hundred seventy-five thousand, nine hundred forty-nine".