616155552 has 96 divisors (see below), whose sum is σ = 1813311360. Its totient is φ = 203535360.

The previous prime is 616155511. The next prime is 616155559. The reversal of 616155552 is 255551616.

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

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

It is not an unprimeable number, because it can be changed into a prime (616155559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94477 + ... + 100787.

It is an arithmetic number, because the mean of its divisors is an integer number (18888660).

Almost surely, 2^616155552 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 616155552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (906655680).

616155552 is an abundant number, since it is smaller than the sum of its proper divisors (1197155808).

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

616155552 is a wasteful number, since it uses less digits than its factorization.

616155552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6443 (or 6429 counting only the distinct ones).

The product of its digits is 45000, while the sum is 36.

The square root of 616155552 is about 24822.4807785201. The cubic root of 616155552 is about 850.9357869217.

The spelling of 616155552 in words is "six hundred sixteen million, one hundred fifty-five thousand, five hundred fifty-two".