155355740 has 12 divisors (see below), whose sum is σ = 326247096. Its totient is φ = 62142288.

The previous prime is 155355737. The next prime is 155355749. The reversal of 155355740 is 47553551.

It is a self number, because there is not a number n which added to its sum of digits gives 155355740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155355749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3883874 + ... + 3883913.

It is an arithmetic number, because the mean of its divisors is an integer number (27187258).

Almost surely, 2^155355740 is an apocalyptic number.

155355740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155355740 is an abundant number, since it is smaller than the sum of its proper divisors (170891356).

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

155355740 is a wasteful number, since it uses less digits than its factorization.

155355740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7767796 (or 7767794 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 35.

The square root of 155355740 is about 12464.1782721526. The cubic root of 155355740 is about 537.5791727614.

The spelling of 155355740 in words is "one hundred fifty-five million, three hundred fifty-five thousand, seven hundred forty".