61148972 has 12 divisors (see below), whose sum is σ = 107393496. Its totient is φ = 30465120.

The previous prime is 61148959. The next prime is 61148981. The reversal of 61148972 is 27984116.

61148972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

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, 26078 + ... + 28325.

It is an arithmetic number, because the mean of its divisors is an integer number (8949458).

Almost surely, 2^61148972 is an apocalyptic number.

It is an amenable number.

61148972 is a deficient number, since it is larger than the sum of its proper divisors (46244524).

61148972 is a wasteful number, since it uses less digits than its factorization.

61148972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54688 (or 54686 counting only the distinct ones).

The product of its digits is 24192, while the sum is 38.

The square root of 61148972 is about 7819.7808153426. The cubic root of 61148972 is about 393.9699101794.

The spelling of 61148972 in words is "sixty-one million, one hundred forty-eight thousand, nine hundred seventy-two".