61173321 has 16 divisors (see below), whose sum is σ = 91386048. Its totient is φ = 36072000.

The previous prime is 61173313. The next prime is 61173379. The reversal of 61173321 is 12337116.

It is not a de Polignac number, because 61173321 - 2³ = 61173313 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61173291 and 61173300.

It is not an unprimeable number, because it can be changed into a prime (61173311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23830 + ... + 26271.

It is an arithmetic number, because the mean of its divisors is an integer number (5711628).

Almost surely, 2^61173321 is an apocalyptic number.

It is an amenable number.

61173321 is a deficient number, since it is larger than the sum of its proper divisors (30212727).

61173321 is a wasteful number, since it uses less digits than its factorization.

61173321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50152.

The product of its digits is 756, while the sum is 24.

The square root of 61173321 is about 7821.3375454586. The cubic root of 61173321 is about 394.0221950615.

The spelling of 61173321 in words is "sixty-one million, one hundred seventy-three thousand, three hundred twenty-one".