155265140 has 24 divisors (see below), whose sum is σ = 326828040. Its totient is φ = 61959168.

The previous prime is 155265133. The next prime is 155265151. The reversal of 155265140 is 41562551.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2446096 + 152819044 = 1564^2 + 12362^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 305 + ... + 17624.

It is an arithmetic number, because the mean of its divisors is an integer number (13617835).

Almost surely, 2^155265140 is an apocalyptic number.

155265140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155265140 is an abundant number, since it is smaller than the sum of its proper divisors (171562900).

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

155265140 is a wasteful number, since it uses less digits than its factorization.

155265140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18371 (or 18369 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 29.

The square root of 155265140 is about 12460.5433268377. The cubic root of 155265140 is about 537.4746510490.

The spelling of 155265140 in words is "one hundred fifty-five million, two hundred sixty-five thousand, one hundred forty".