611115552 has 72 divisors (see below), whose sum is σ = 1741993344. Its totient is φ = 203220864.

The previous prime is 611115539. The next prime is 611115581. The reversal of 611115552 is 255511116.

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 131053 + ... + 135635.

It is an arithmetic number, because the mean of its divisors is an integer number (24194352).

Almost surely, 2^611115552 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 611115552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (870996672).

611115552 is an abundant number, since it is smaller than the sum of its proper divisors (1130877792).

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

611115552 is a wasteful number, since it uses less digits than its factorization.

611115552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5062 (or 5051 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The square root of 611115552 is about 24720.7514448894. The cubic root of 611115552 is about 848.6092838555.

Adding to 611115552 its reverse (255511116), we get a palindrome (866626668).

The spelling of 611115552 in words is "six hundred eleven million, one hundred fifteen thousand, five hundred fifty-two".