155243616 has 48 divisors (see below), whose sum is σ = 444564288. Its totient is φ = 47043200.

The previous prime is 155243587. The next prime is 155243617. The reversal of 155243616 is 616342551.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155243617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72450 + ... + 74561.

It is an arithmetic number, because the mean of its divisors is an integer number (9261756).

Almost surely, 2^155243616 is an apocalyptic number.

155243616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

155243616 is an abundant number, since it is smaller than the sum of its proper divisors (289320672).

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

155243616 is a wasteful number, since it uses less digits than its factorization.

155243616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147035 (or 147027 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 155243616 is about 12459.6796106481. The cubic root of 155243616 is about 537.4498136665.

The spelling of 155243616 in words is "one hundred fifty-five million, two hundred forty-three thousand, six hundred sixteen".