61172898 has 8 divisors (see below), whose sum is σ = 122345808. Its totient is φ = 20390964.

The previous prime is 61172887. The next prime is 61172899. The reversal of 61172898 is 89827116.

61172898 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

61172898 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (61172899) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 5097736 + ... + 5097747.

It is an arithmetic number, because the mean of its divisors is an integer number (15293226).

Almost surely, 2^61172898 is an apocalyptic number.

61172898 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61172898 is a wasteful number, since it uses less digits than its factorization.

61172898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10195488.

The product of its digits is 48384, while the sum is 42.

The square root of 61172898 is about 7821.3105040012. The cubic root of 61172898 is about 394.0212868673.

The spelling of 61172898 in words is "sixty-one million, one hundred seventy-two thousand, eight hundred ninety-eight".