61120057 has 2 divisors, whose sum is σ = 61120058. Its totient is φ = 61120056.

The previous prime is 61120051. The next prime is 61120067. The reversal of 61120057 is 75002116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56385081 + 4734976 = 7509^2 + 2176^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61120057 is a prime.

It is a super-2 number, since 2×61120057² = 7471322735366498, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61120051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30560028 + 30560029.

It is an arithmetic number, because the mean of its divisors is an integer number (30560029).

Almost surely, 2^61120057 is an apocalyptic number.

It is an amenable number.

61120057 is a deficient number, since it is larger than the sum of its proper divisors (1).

61120057 is an equidigital number, since it uses as much as digits as its factorization.

61120057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 420, while the sum is 22.

The square root of 61120057 is about 7817.9317597431. The cubic root of 61120057 is about 393.9078026432.

The spelling of 61120057 in words is "sixty-one million, one hundred twenty thousand, fifty-seven".