61163100 has 126 divisors (see below), whose sum is σ = 199232040. Its totient is φ = 16290720.

The previous prime is 61163083. The next prime is 61163111. The reversal of 61163100 is 136116.

61163100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×61163100² = 7481849603220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 41 ways as a sum of consecutive naturals, for example, 72481 + ... + 73319.

Almost surely, 2^61163100 is an apocalyptic number.

61163100 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61163100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99616020).

61163100 is an abundant number, since it is smaller than the sum of its proper divisors (138068940).

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

61163100 is a wasteful number, since it uses less digits than its factorization.

61163100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 849 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 61163100 is about 7820.6841132985. The cubic root of 61163100 is about 394.0002490830. Note that the first 3 decimals are identical.

Adding to 61163100 its reverse (136116), we get a palindrome (61299216).

It can be divided in two parts, 6116 and 3100, that added together give a square (9216 = 96²).

The spelling of 61163100 in words is "sixty-one million, one hundred sixty-three thousand, one hundred".