155032540 has 24 divisors (see below), whose sum is σ = 350612640. Its totient is φ = 57242688.

The previous prime is 155032531. The next prime is 155032541. The reversal of 155032540 is 45230551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155032541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 297880 + ... + 298399.

It is an arithmetic number, because the mean of its divisors is an integer number (14608860).

Almost surely, 2^155032540 is an apocalyptic number.

155032540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155032540 is an abundant number, since it is smaller than the sum of its proper divisors (195580100).

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

155032540 is a wasteful number, since it uses less digits than its factorization.

155032540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596301 (or 596299 counting only the distinct ones).

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

The square root of 155032540 is about 12451.2063672561. The cubic root of 155032540 is about 537.2061231098.

The spelling of 155032540 in words is "one hundred fifty-five million, thirty-two thousand, five hundred forty".