61141057 has 8 divisors (see below), whose sum is σ = 63419112. Its totient is φ = 58896000.

The previous prime is 61141039. The next prime is 61141079. The reversal of 61141057 is 75014116.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 34680321 + 26460736 = 5889^2 + 5144^2 .

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 61141057 - 2⁷ = 61140929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61141007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4444 + ... + 11917.

It is an arithmetic number, because the mean of its divisors is an integer number (7927389).

Almost surely, 2^61141057 is an apocalyptic number.

It is an amenable number.

61141057 is a deficient number, since it is larger than the sum of its proper divisors (2278055).

61141057 is a wasteful number, since it uses less digits than its factorization.

61141057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16499.

The product of its (nonzero) digits is 840, while the sum is 25.

The square root of 61141057 is about 7819.2747106110. The cubic root of 61141057 is about 393.9529112216.

The spelling of 61141057 in words is "sixty-one million, one hundred forty-one thousand, fifty-seven".