155235550 has 48 divisors (see below), whose sum is σ = 301096800. Its totient is φ = 59472000.

The previous prime is 155235527. The next prime is 155235581. The reversal of 155235550 is 55532551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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, 218596 + ... + 219304.

It is an arithmetic number, because the mean of its divisors is an integer number (6272850).

Almost surely, 2^155235550 is an apocalyptic number.

155235550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155235550 is a deficient number, since it is larger than the sum of its proper divisors (145861250).

155235550 is a wasteful number, since it uses less digits than its factorization.

155235550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901 (or 896 counting only the distinct ones).

The product of its (nonzero) digits is 18750, while the sum is 31.

The square root of 155235550 is about 12459.3559223581. The cubic root of 155235550 is about 537.4405054034.

The spelling of 155235550 in words is "one hundred fifty-five million, two hundred thirty-five thousand, five hundred fifty".