61021361 has 8 divisors (see below), whose sum is σ = 63571200. Its totient is φ = 58507920.

The previous prime is 61021297. The next prime is 61021397. The reversal of 61021361 is 16312016.

61021361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 61021361 - 2⁶ = 61021297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61021561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5651 + ... + 12408.

It is an arithmetic number, because the mean of its divisors is an integer number (7946400).

Almost surely, 2^61021361 is an apocalyptic number.

It is an amenable number.

61021361 is a deficient number, since it is larger than the sum of its proper divisors (2549839).

61021361 is a wasteful number, since it uses less digits than its factorization.

61021361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18199.

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 61021361 is about 7811.6170541060. The cubic root of 61021361 is about 393.6956624102.

Adding to 61021361 its reverse (16312016), we get a palindrome (77333377).

The spelling of 61021361 in words is "sixty-one million, twenty-one thousand, three hundred sixty-one".