61129160 has 16 divisors (see below), whose sum is σ = 137540700. Its totient is φ = 24451648.

The previous prime is 61129157. The next prime is 61129169. The reversal of 61129160 is 6192116.

It can be written as a sum of positive squares in 2 ways, for example, as 60808804 + 320356 = 7798^2 + 566^2 .

It is not an unprimeable number, because it can be changed into a prime (61129169) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 764075 + ... + 764154.

Almost surely, 2^61129160 is an apocalyptic number.

It is an amenable number.

61129160 is an abundant number, since it is smaller than the sum of its proper divisors (76411540).

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

61129160 is a wasteful number, since it uses less digits than its factorization.

61129160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1528240 (or 1528236 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 26.

The square root of 61129160 is about 7818.5139252930. The cubic root of 61129160 is about 393.9273574064.

The spelling of 61129160 in words is "sixty-one million, one hundred twenty-nine thousand, one hundred sixty".