155655049 has 8 divisors (see below), whose sum is σ = 178742880. Its totient is φ = 134056800.

The previous prime is 155655001. The next prime is 155655091. The reversal of 155655049 is 940556551.

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

It is a cyclic number.

It is not a de Polignac number, because 155655049 - 2⁹ = 155654537 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155655449) 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, 372172 + ... + 372589.

It is an arithmetic number, because the mean of its divisors is an integer number (22342860).

Almost surely, 2^155655049 is an apocalyptic number.

155655049 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

155655049 is a deficient number, since it is larger than the sum of its proper divisors (23087831).

155655049 is a wasteful number, since it uses less digits than its factorization.

155655049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744791.

The product of its (nonzero) digits is 135000, while the sum is 40.

The square root of 155655049 is about 12476.1792628994. The cubic root of 155655049 is about 537.9241853616.

The spelling of 155655049 in words is "one hundred fifty-five million, six hundred fifty-five thousand, forty-nine".