61148257 has 2 divisors, whose sum is σ = 61148258. Its totient is φ = 61148256.

The previous prime is 61148233. The next prime is 61148281. The reversal of 61148257 is 75284116.

It is a balanced prime because it is at equal distance from previous prime (61148233) and next prime (61148281).

It can be written as a sum of positive squares in only one way, i.e., 35988001 + 25160256 = 5999^2 + 5016^2 .

It is a cyclic number.

It is not a de Polignac number, because 61148257 - 2¹⁵ = 61115489 is a prime.

It is not a weakly prime, because it can be changed into another prime (61148057) 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, 30574128 + 30574129.

It is an arithmetic number, because the mean of its divisors is an integer number (30574129).

Almost surely, 2^61148257 is an apocalyptic number.

It is an amenable number.

61148257 is a deficient number, since it is larger than the sum of its proper divisors (1).

61148257 is an equidigital number, since it uses as much as digits as its factorization.

61148257 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13440, while the sum is 34.

The square root of 61148257 is about 7819.7350978150. The cubic root of 61148257 is about 393.9683746421.

The spelling of 61148257 in words is "sixty-one million, one hundred forty-eight thousand, two hundred fifty-seven".