155417664 has 56 divisors (see below), whose sum is σ = 413674560. Its totient is φ = 51495424.

The previous prime is 155417653. The next prime is 155417681. The reversal of 155417664 is 466714551.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30877 + ... + 35555.

Almost surely, 2^155417664 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 155417664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206837280).

155417664 is an abundant number, since it is smaller than the sum of its proper divisors (258256896).

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

155417664 is a wasteful number, since it uses less digits than its factorization.

155417664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4867 (or 4857 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 155417664 is about 12466.6621033860. The cubic root of 155417664 is about 537.6505887060.

The spelling of 155417664 in words is "one hundred fifty-five million, four hundred seventeen thousand, six hundred sixty-four".