155506752 has 84 divisors (see below), whose sum is σ = 471981276. Its totient is φ = 48783360.

The previous prime is 155506739. The next prime is 155506753. The reversal of 155506752 is 257605551.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 134931456 + 20575296 = 11616^2 + 4536^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155506753) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1852 + ... + 17732.

Almost surely, 2^155506752 is an apocalyptic number.

155506752 is a gapful number since it is divisible by the number (12) 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 155506752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235990638).

155506752 is an abundant number, since it is smaller than the sum of its proper divisors (316474524).

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

155506752 is a wasteful number, since it uses less digits than its factorization.

155506752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15916 (or 15903 counting only the distinct ones).

The product of its (nonzero) digits is 52500, while the sum is 36.

The square root of 155506752 is about 12470.2346409360. The cubic root of 155506752 is about 537.7532991815.

The spelling of 155506752 in words is "one hundred fifty-five million, five hundred six thousand, seven hundred fifty-two".