155312544 has 96 divisors (see below), whose sum is σ = 439266240. Its totient is φ = 47869952.

The previous prime is 155312543. The next prime is 155312557. The reversal of 155312544 is 445213551.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155312543) 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, 95482 + ... + 97094.

It is an arithmetic number, because the mean of its divisors is an integer number (4575690).

Almost surely, 2^155312544 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 155312544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219633120).

155312544 is an abundant number, since it is smaller than the sum of its proper divisors (283953696).

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

155312544 is a wasteful number, since it uses less digits than its factorization.

155312544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1702 (or 1694 counting only the distinct ones).

The product of its digits is 12000, while the sum is 30.

The square root of 155312544 is about 12462.4453459183. The cubic root of 155312544 is about 537.5293442786.

The spelling of 155312544 in words is "one hundred fifty-five million, three hundred twelve thousand, five hundred forty-four".