61137882 has 128 divisors (see below), whose sum is σ = 159667200. Its totient is φ = 17169408.

The previous prime is 61137851. The next prime is 61137889. The reversal of 61137882 is 28873116.

61137882 is a `hidden beast` number, since 611 + 37 + 8 + 8 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (61137889) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 560844 + ... + 560952.

It is an arithmetic number, because the mean of its divisors is an integer number (1247400).

Almost surely, 2^61137882 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61137882, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79833600).

61137882 is an abundant number, since it is smaller than the sum of its proper divisors (98529318).

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

61137882 is a wasteful number, since it uses less digits than its factorization.

61137882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197 (or 191 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 61137882 is about 7819.0716840300. The cubic root of 61137882 is about 393.9460918970.

The spelling of 61137882 in words is "sixty-one million, one hundred thirty-seven thousand, eight hundred eighty-two".