61005331 has 4 divisors (see below), whose sum is σ = 61032600. Its totient is φ = 60978064.

The previous prime is 61005323. The next prime is 61005353. The reversal of 61005331 is 13350016.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61005331 - 2³ = 61005323 is a prime.

It is a super-2 number, since 2×61005331² = 7443300820839122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61005299 and 61005308.

It is not an unprimeable number, because it can be changed into a prime (61005311) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9946 + ... + 14863.

It is an arithmetic number, because the mean of its divisors is an integer number (15258150).

Almost surely, 2^61005331 is an apocalyptic number.

61005331 is a deficient number, since it is larger than the sum of its proper divisors (27269).

61005331 is a wasteful number, since it uses less digits than its factorization.

61005331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27268.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 61005331 is about 7810.5909507540. The cubic root of 61005331 is about 393.6611854442.

Adding to 61005331 its reverse (13350016), we get a palindrome (74355347).

The spelling of 61005331 in words is "sixty-one million, five thousand, three hundred thirty-one".