155135550 has 24 divisors (see below), whose sum is σ = 384736536. Its totient is φ = 41369440.

The previous prime is 155135543. The next prime is 155135567. The reversal of 155135550 is 55531551.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 516969 + ... + 517268.

It is an arithmetic number, because the mean of its divisors is an integer number (16030689).

Almost surely, 2^155135550 is an apocalyptic number.

155135550 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155135550 is an abundant number, since it is smaller than the sum of its proper divisors (229600986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155135550 is a wasteful number, since it uses less digits than its factorization.

155135550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1034252 (or 1034247 counting only the distinct ones).

The product of its (nonzero) digits is 9375, while the sum is 30.

The square root of 155135550 is about 12455.3422273336. The cubic root of 155135550 is about 537.3250773866.

The spelling of 155135550 in words is "one hundred fifty-five million, one hundred thirty-five thousand, five hundred fifty".