155531068 has 48 divisors (see below), whose sum is σ = 340752384. Its totient is φ = 60344640.

The previous prime is 155531063. The next prime is 155531107. The reversal of 155531068 is 860135551.

155531068 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×155531068² = 48379826226441248, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155531063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84405 + ... + 86227.

It is an arithmetic number, because the mean of its divisors is an integer number (7099008).

Almost surely, 2^155531068 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155531068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (170376192).

155531068 is an abundant number, since it is smaller than the sum of its proper divisors (185221316).

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

155531068 is a wasteful number, since it uses less digits than its factorization.

155531068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2122 (or 2120 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 34.

The square root of 155531068 is about 12471.2095644328. The cubic root of 155531068 is about 537.7813265342.

It can be divided in two parts, 1555 and 31068, that added together give a palindrome (32623).

The spelling of 155531068 in words is "one hundred fifty-five million, five hundred thirty-one thousand, sixty-eight".