61055331 has 8 divisors (see below), whose sum is σ = 81469440. Its totient is φ = 40672392.

The previous prime is 61055329. The next prime is 61055339. The reversal of 61055331 is 13355016.

61055331 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 not a de Polignac number, because 61055331 - 2¹ = 61055329 is a prime.

It is a super-2 number, since 2×61055331² = 7455506887039122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (61055339) 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, 2755 + ... + 11388.

It is an arithmetic number, because the mean of its divisors is an integer number (10183680).

Almost surely, 2^61055331 is an apocalyptic number.

61055331 is a deficient number, since it is larger than the sum of its proper divisors (20414109).

61055331 is a wasteful number, since it uses less digits than its factorization.

61055331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15585.

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 61055331 is about 7813.7910773196. The cubic root of 61055331 is about 393.7687043773.

The spelling of 61055331 in words is "sixty-one million, fifty-five thousand, three hundred thirty-one".