61727057 has 4 divisors (see below), whose sum is σ = 70545216. Its totient is φ = 52908900.

The previous prime is 61727053. The next prime is 61727077. The reversal of 61727057 is 75072716.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61727057 - 2² = 61727053 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61727053) 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, 4409069 + ... + 4409082.

It is an arithmetic number, because the mean of its divisors is an integer number (17636304).

Almost surely, 2^61727057 is an apocalyptic number.

It is an amenable number.

61727057 is a deficient number, since it is larger than the sum of its proper divisors (8818159).

61727057 is an equidigital number, since it uses as much as digits as its factorization.

61727057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8818158.

The product of its (nonzero) digits is 20580, while the sum is 35.

The square root of 61727057 is about 7856.6568589954. The cubic root of 61727057 is about 395.2075115392.

The spelling of 61727057 in words is "sixty-one million, seven hundred twenty-seven thousand, fifty-seven".