61562077 has 2 divisors, whose sum is σ = 61562078. Its totient is φ = 61562076.

The previous prime is 61562051. The next prime is 61562089. The reversal of 61562077 is 77026516.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46977316 + 14584761 = 6854^2 + 3819^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61562077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61562027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30781038 + 30781039.

It is an arithmetic number, because the mean of its divisors is an integer number (30781039).

Almost surely, 2^61562077 is an apocalyptic number.

It is an amenable number.

61562077 is a deficient number, since it is larger than the sum of its proper divisors (1).

61562077 is an equidigital number, since it uses as much as digits as its factorization.

61562077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 61562077 is about 7846.1504573899. The cubic root of 61562077 is about 394.8551025448.

The spelling of 61562077 in words is "sixty-one million, five hundred sixty-two thousand, seventy-seven".