155553550 has 48 divisors (see below), whose sum is σ = 303641280. Its totient is φ = 59218560.

The previous prime is 155553547. The next prime is 155553557. The reversal of 155553550 is 55355551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155553557) 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 23 ways as a sum of consecutive naturals, for example, 86056 + ... + 87844.

It is an arithmetic number, because the mean of its divisors is an integer number (6325860).

Almost surely, 2^155553550 is an apocalyptic number.

155553550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155553550 is a deficient number, since it is larger than the sum of its proper divisors (148087730).

155553550 is a wasteful number, since it uses less digits than its factorization.

155553550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1880 counting only the distinct ones).

The product of its (nonzero) digits is 46875, while the sum is 34.

The square root of 155553550 is about 12472.1108878970. The cubic root of 155553550 is about 537.8072373644.

The spelling of 155553550 in words is "one hundred fifty-five million, five hundred fifty-three thousand, five hundred fifty".