155285616 has 40 divisors (see below), whose sum is σ = 424754064. Its totient is φ = 48716800.

The previous prime is 155285609. The next prime is 155285621. The reversal of 155285616 is 616582551.

It is a super-2 number, since 2×155285616² = 48227245072998912, which contains 22 as substring.

It is a congruent number.

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, 94335 + ... + 95966.

Almost surely, 2^155285616 is an apocalyptic number.

155285616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155285616 is an abundant number, since it is smaller than the sum of its proper divisors (269468448).

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

155285616 is a wasteful number, since it uses less digits than its factorization.

155285616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190329 (or 190323 counting only the distinct ones).

The product of its digits is 72000, while the sum is 39.

The square root of 155285616 is about 12461.3649332647. The cubic root of 155285616 is about 537.4982769730.

The spelling of 155285616 in words is "one hundred fifty-five million, two hundred eighty-five thousand, six hundred sixteen".