61548811 has 2 divisors, whose sum is σ = 61548812. Its totient is φ = 61548810.

The previous prime is 61548793. The next prime is 61548827. The reversal of 61548811 is 11884516.

It is a happy number.

61548811 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61548811 - 2²¹ = 59451659 is a prime.

It is a super-2 number, since 2×61548811² = 7576512271027442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61548881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30774405 + 30774406.

It is an arithmetic number, because the mean of its divisors is an integer number (30774406).

Almost surely, 2^61548811 is an apocalyptic number.

61548811 is a deficient number, since it is larger than the sum of its proper divisors (1).

61548811 is an equidigital number, since it uses as much as digits as its factorization.

61548811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 34.

The square root of 61548811 is about 7845.3050291241. The cubic root of 61548811 is about 394.8267380908.

The spelling of 61548811 in words is "sixty-one million, five hundred forty-eight thousand, eight hundred eleven".