155244550 has 12 divisors (see below), whose sum is σ = 288754956. Its totient is φ = 62097800.

The previous prime is 155244547. The next prime is 155244571. The reversal of 155244550 is 55442551.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1552396 + ... + 1552495.

It is an arithmetic number, because the mean of its divisors is an integer number (24062913).

Almost surely, 2^155244550 is an apocalyptic number.

155244550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155244550 is a deficient number, since it is larger than the sum of its proper divisors (133510406).

155244550 is a wasteful number, since it uses less digits than its factorization.

155244550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3104903 (or 3104898 counting only the distinct ones).

The product of its (nonzero) digits is 20000, while the sum is 31.

The square root of 155244550 is about 12459.7170914913. The cubic root of 155244550 is about 537.4508914932.

The spelling of 155244550 in words is "one hundred fifty-five million, two hundred forty-four thousand, five hundred fifty".