155233140 has 48 divisors (see below), whose sum is σ = 436387392. Its totient is φ = 41230336.

The previous prime is 155233123. The next prime is 155233153. The reversal of 155233140 is 41332551.

It is a self number, because there is not a number n which added to its sum of digits gives 155233140.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10387 + ... + 20453.

It is an arithmetic number, because the mean of its divisors is an integer number (9091404).

Almost surely, 2^155233140 is an apocalyptic number.

155233140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155233140 is an abundant number, since it is smaller than the sum of its proper divisors (281154252).

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

155233140 is a wasteful number, since it uses less digits than its factorization.

155233140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10336 (or 10334 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 155233140 is about 12459.2592075131. The cubic root of 155233140 is about 537.4377241712.

Adding to 155233140 its reverse (41332551), we get a palindrome (196565691).

The spelling of 155233140 in words is "one hundred fifty-five million, two hundred thirty-three thousand, one hundred forty".