61098577 has 2 divisors, whose sum is σ = 61098578. Its totient is φ = 61098576.

The previous prime is 61098529. The next prime is 61098593. The reversal of 61098577 is 77589016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51710481 + 9388096 = 7191^2 + 3064^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61098577 is a prime.

It is a super-2 number, since 2×61098577² = 7466072222849858, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61098517) 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 as a sum of consecutive naturals, namely, 30549288 + 30549289.

It is an arithmetic number, because the mean of its divisors is an integer number (30549289).

Almost surely, 2^61098577 is an apocalyptic number.

It is an amenable number.

61098577 is a deficient number, since it is larger than the sum of its proper divisors (1).

61098577 is an equidigital number, since it uses as much as digits as its factorization.

61098577 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 105840, while the sum is 43.

The square root of 61098577 is about 7816.5578741541. The cubic root of 61098577 is about 393.8616523209.

The spelling of 61098577 in words is "sixty-one million, ninety-eight thousand, five hundred seventy-seven".