155432664 has 48 divisors (see below), whose sum is σ = 423324720. Its totient is φ = 51520320.

The previous prime is 155432657. The next prime is 155432677. The reversal of 155432664 is 466234551.

155432664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7069 + ... + 18995.

It is an arithmetic number, because the mean of its divisors is an integer number (8819265).

Almost surely, 2^155432664 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 155432664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (211662360).

155432664 is an abundant number, since it is smaller than the sum of its proper divisors (267892056).

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

155432664 is a wasteful number, since it uses less digits than its factorization.

155432664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12120 (or 12113 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 155432664 is about 12467.2636933691. The cubic root of 155432664 is about 537.6678851084.

The spelling of 155432664 in words is "one hundred fifty-five million, four hundred thirty-two thousand, six hundred sixty-four".