61010172 has 30 divisors (see below), whose sum is σ = 159493488. Its totient is φ = 20336616.

The previous prime is 61010149. The next prime is 61010179. The reversal of 61010172 is 27101016.

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 (61010179) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 93828 + ... + 94475.

Almost surely, 2^61010172 is an apocalyptic number.

It is an amenable number.

61010172 is an abundant number, since it is smaller than the sum of its proper divisors (98483316).

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

61010172 is a wasteful number, since it uses less digits than its factorization.

61010172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188319 (or 188308 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 18.

The square root of 61010172 is about 7810.9008443329. The cubic root of 61010172 is about 393.6715979954.

Adding to 61010172 its reverse (27101016), we get a palindrome (88111188).

The spelling of 61010172 in words is "sixty-one million, ten thousand, one hundred seventy-two".