61191472 has 20 divisors (see below), whose sum is σ = 119273616. Its totient is φ = 30411200.

The previous prime is 61191439. The next prime is 61191497. The reversal of 61191472 is 27419116.

61191472 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, 8779 + ... + 14122.

Almost surely, 2^61191472 is an apocalyptic number.

It is an amenable number.

61191472 is a deficient number, since it is larger than the sum of its proper divisors (58082144).

61191472 is a wasteful number, since it uses less digits than its factorization.

61191472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23076 (or 23070 counting only the distinct ones).

The product of its digits is 3024, while the sum is 31.

The square root of 61191472 is about 7822.4978108019. The cubic root of 61191472 is about 394.0611618829.

The spelling of 61191472 in words is "sixty-one million, one hundred ninety-one thousand, four hundred seventy-two".