155123016 has 64 divisors (see below), whose sum is σ = 401829120. Its totient is φ = 49869120.

The previous prime is 155122993. The next prime is 155123021. The reversal of 155123016 is 610321551.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84751 + ... + 86561.

It is an arithmetic number, because the mean of its divisors is an integer number (6278580).

Almost surely, 2^155123016 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 155123016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (200914560).

155123016 is an abundant number, since it is smaller than the sum of its proper divisors (246706104).

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

155123016 is a wasteful number, since it uses less digits than its factorization.

155123016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1946 (or 1942 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 155123016 is about 12454.8390595784. The cubic root of 155123016 is about 537.3106061411.

Adding to 155123016 its reverse (610321551), we get a palindrome (765444567).

It can be divided in two parts, 15512 and 3016, that added together give a triangular number (18528 = T₁₉₂).

The spelling of 155123016 in words is "one hundred fifty-five million, one hundred twenty-three thousand, sixteen".