155001560 has 64 divisors (see below), whose sum is σ = 400403520. Its totient is φ = 52899840.

The previous prime is 155001559. The next prime is 155001617. The reversal of 155001560 is 65100551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66332 + ... + 68628.

It is an arithmetic number, because the mean of its divisors is an integer number (6256305).

Almost surely, 2^155001560 is an apocalyptic number.

155001560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155001560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200201760).

155001560 is an abundant number, since it is smaller than the sum of its proper divisors (245401960).

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

155001560 is a wasteful number, since it uses less digits than its factorization.

155001560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2556 (or 2552 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 23.

The square root of 155001560 is about 12449.9622489387. The cubic root of 155001560 is about 537.1703376022.

The spelling of 155001560 in words is "one hundred fifty-five million, one thousand, five hundred sixty".