61105507 has 2 divisors, whose sum is σ = 61105508. Its totient is φ = 61105506.

The previous prime is 61105493. The next prime is 61105519. The reversal of 61105507 is 70550116.

61105507 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 61105507 - 2⁷ = 61105379 is a prime.

It is not a weakly prime, because it can be changed into another prime (61105547) 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, 30552753 + 30552754.

It is an arithmetic number, because the mean of its divisors is an integer number (30552754).

Almost surely, 2^61105507 is an apocalyptic number.

61105507 is a deficient number, since it is larger than the sum of its proper divisors (1).

61105507 is an equidigital number, since it uses as much as digits as its factorization.

61105507 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 61105507 is about 7817.0011513367. The cubic root of 61105507 is about 393.8765427826.

The spelling of 61105507 in words is "sixty-one million, one hundred five thousand, five hundred seven".