61089172 has 6 divisors (see below), whose sum is σ = 106906058. Its totient is φ = 30544584.

The previous prime is 61089163. The next prime is 61089187. The reversal of 61089172 is 27198016.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 59536656 + 1552516 = 7716^2 + 1246^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7636143 + ... + 7636150.

Almost surely, 2^61089172 is an apocalyptic number.

It is an amenable number.

61089172 is a deficient number, since it is larger than the sum of its proper divisors (45816886).

61089172 is a wasteful number, since it uses less digits than its factorization.

61089172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15272297 (or 15272295 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 34.

The square root of 61089172 is about 7815.9562434804. The cubic root of 61089172 is about 393.8414420361.

The spelling of 61089172 in words is "sixty-one million, eighty-nine thousand, one hundred seventy-two".