61167321 has 12 divisors (see below), whose sum is σ = 88843300. Its totient is φ = 40551840.

The previous prime is 61167319. The next prime is 61167347. The reversal of 61167321 is 12376116.

It can be written as a sum of positive squares in 2 ways, for example, as 6702921 + 54464400 = 2589^2 + 7380^2 .

It is not a de Polignac number, because 61167321 - 2¹ = 61167319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61167311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17146 + ... + 20403.

Almost surely, 2^61167321 is an apocalyptic number.

It is an amenable number.

61167321 is a deficient number, since it is larger than the sum of its proper divisors (27675979).

61167321 is a wasteful number, since it uses less digits than its factorization.

61167321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37736 (or 37733 counting only the distinct ones).

The product of its digits is 1512, while the sum is 27.

The square root of 61167321 is about 7820.9539699451. The cubic root of 61167321 is about 394.0093124823.

The spelling of 61167321 in words is "sixty-one million, one hundred sixty-seven thousand, three hundred twenty-one".