155601530 has 32 divisors (see below), whose sum is σ = 331136640. Its totient is φ = 51508800.

The previous prime is 155601529. The next prime is 155601547. The reversal of 155601530 is 35106551.

It is a super-2 number, since 2×155601530² = 48423672276681800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155601530.

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, 36296 + ... + 40355.

It is an arithmetic number, because the mean of its divisors is an integer number (10348020).

Almost surely, 2^155601530 is an apocalyptic number.

155601530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155601530 is an abundant number, since it is smaller than the sum of its proper divisors (175535110).

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

155601530 is a wasteful number, since it uses less digits than its factorization.

155601530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76694.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 155601530 is about 12474.0342311539. The cubic root of 155601530 is about 537.8625266600.

The spelling of 155601530 in words is "one hundred fifty-five million, six hundred one thousand, five hundred thirty".