155230540 has 24 divisors (see below), whose sum is σ = 334796112. Its totient is φ = 60413760.

The previous prime is 155230531. The next prime is 155230541. The reversal of 155230540 is 45032551.

It is not an unprimeable number, because it can be changed into a prime (155230541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104146 + ... + 105625.

It is an arithmetic number, because the mean of its divisors is an integer number (13949838).

Almost surely, 2^155230540 is an apocalyptic number.

155230540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155230540 is an abundant number, since it is smaller than the sum of its proper divisors (179565572).

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

155230540 is a wasteful number, since it uses less digits than its factorization.

155230540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209817 (or 209815 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 155230540 is about 12459.1548670044. The cubic root of 155230540 is about 537.4347236395.

The spelling of 155230540 in words is "one hundred fifty-five million, two hundred thirty thousand, five hundred forty".