155515052 has 96 divisors (see below), whose sum is σ = 366750720. Its totient is φ = 55883520.

The previous prime is 155515037. The next prime is 155515067. The reversal of 155515052 is 250515551.

It is an interprime number because it is at equal distance from previous prime (155515037) and next prime (155515067).

It is a Harshad number since it is a multiple of its sum of digits (29).

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 31 ways as a sum of consecutive naturals, for example, 205058 + ... + 205814.

It is an arithmetic number, because the mean of its divisors is an integer number (3820320).

Almost surely, 2^155515052 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 155515052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (183375360).

155515052 is an abundant number, since it is smaller than the sum of its proper divisors (211235668).

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

155515052 is a wasteful number, since it uses less digits than its factorization.

155515052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 831 (or 829 counting only the distinct ones).

The product of its (nonzero) digits is 6250, while the sum is 29.

The square root of 155515052 is about 12470.5674289505. The cubic root of 155515052 is about 537.7628663395.

The spelling of 155515052 in words is "one hundred fifty-five million, five hundred fifteen thousand, fifty-two".