61057443 has 8 divisors (see below), whose sum is σ = 81464400. Its totient is φ = 40677728.

The previous prime is 61057439. The next prime is 61057481. The reversal of 61057443 is 34475016.

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 61057443 - 2² = 61057439 is a prime.

It is a super-2 number, since 2×61057443² = 7456022691396498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 61057443.

It is not an unprimeable number, because it can be changed into a prime (61057483) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828 + ... + 11081.

It is an arithmetic number, because the mean of its divisors is an integer number (10183050).

Almost surely, 2^61057443 is an apocalyptic number.

61057443 is a deficient number, since it is larger than the sum of its proper divisors (20406957).

61057443 is a wasteful number, since it uses less digits than its factorization.

61057443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13621.

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 61057443 is about 7813.9262218170. The cubic root of 61057443 is about 393.7732446847.

The spelling of 61057443 in words is "sixty-one million, fifty-seven thousand, four hundred forty-three".