155238956 has 12 divisors (see below), whose sum is σ = 278294520. Its totient is φ = 75726240.

The previous prime is 155238913. The next prime is 155238973. The reversal of 155238956 is 659832551.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 473126 + ... + 473453.

It is an arithmetic number, because the mean of its divisors is an integer number (23191210).

Almost surely, 2^155238956 is an apocalyptic number.

It is an amenable number.

155238956 is a deficient number, since it is larger than the sum of its proper divisors (123055564).

155238956 is a wasteful number, since it uses less digits than its factorization.

155238956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 946624 (or 946622 counting only the distinct ones).

The product of its digits is 324000, while the sum is 44.

The square root of 155238956 is about 12459.4926060414. The cubic root of 155238956 is about 537.4444360086. Note that the first 4 decimals are identical.

The spelling of 155238956 in words is "one hundred fifty-five million, two hundred thirty-eight thousand, nine hundred fifty-six".