61671150 has 72 divisors (see below), whose sum is σ = 174434520. Its totient is φ = 15577920.

The previous prime is 61671143. The next prime is 61671151. The reversal of 61671150 is 5117616.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61671151) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4944 + ... + 12156.

Almost surely, 2^61671150 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61671150, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87217260).

61671150 is an abundant number, since it is smaller than the sum of its proper divisors (112763370).

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

61671150 is a wasteful number, since it uses less digits than its factorization.

61671150 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7250 (or 7242 counting only the distinct ones).

The product of its (nonzero) digits is 1260, while the sum is 27.

The square root of 61671150 is about 7853.0981147570. The cubic root of 61671150 is about 395.0881606348.

Adding to 61671150 its reverse (5117616), we get a palindrome (66788766).

The spelling of 61671150 in words is "sixty-one million, six hundred seventy-one thousand, one hundred fifty".