61211160 has 192 divisors, whose sum is σ = 216712800. Its totient is φ = 15365376.

The previous prime is 61211113. The next prime is 61211167. The reversal of 61211160 is 6111216.

It is a super-2 number, since 2×61211160² = 7493612217091200, 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 not an unprimeable number, because it can be changed into a prime (61211167) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 389802 + ... + 389958.

Almost surely, 2^61211160 is an apocalyptic number.

61211160 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 61211160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108356400).

61211160 is an abundant number, since it is smaller than the sum of its proper divisors (155501640).

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

61211160 is a wasteful number, since it uses less digits than its factorization.

61211160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 61211160 is about 7823.7561311687. The cubic root of 61211160 is about 394.1034196464.

Adding to 61211160 its reverse (6111216), we get a palindrome (67322376).

It can be divided in two parts, 612111 and 60, that added together give a triangular number (612171 = T₁₁₀₆).

The spelling of 61211160 in words is "sixty-one million, two hundred eleven thousand, one hundred sixty".