61128361 has 8 divisors (see below), whose sum is σ = 69969600. Its totient is φ = 52314288.

The previous prime is 61128349. The next prime is 61128371. The reversal of 61128361 is 16382116.

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

It is a cyclic number.

It is not a de Polignac number, because 61128361 - 2⁷ = 61128233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61128371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1711 + ... + 11188.

It is an arithmetic number, because the mean of its divisors is an integer number (8746200).

Almost surely, 2^61128361 is an apocalyptic number.

It is an amenable number.

61128361 is a deficient number, since it is larger than the sum of its proper divisors (8841239).

61128361 is a wasteful number, since it uses less digits than its factorization.

61128361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13583.

The product of its digits is 1728, while the sum is 28.

The square root of 61128361 is about 7818.4628284593. The cubic root of 61128361 is about 393.9256410988.

The spelling of 61128361 in words is "sixty-one million, one hundred twenty-eight thousand, three hundred sixty-one".