61245905 has 16 divisors (see below), whose sum is σ = 85148544. Its totient is φ = 41420160.

The previous prime is 61245893. The next prime is 61245929. The reversal of 61245905 is 50954216.

It is a happy number.

61245905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61245905 - 2¹⁰ = 61244881 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 9431 + ... + 14540.

It is an arithmetic number, because the mean of its divisors is an integer number (5321784).

Almost surely, 2^61245905 is an apocalyptic number.

It is an amenable number.

61245905 is a deficient number, since it is larger than the sum of its proper divisors (23902639).

61245905 is a wasteful number, since it uses less digits than its factorization.

61245905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24056.

The product of its (nonzero) digits is 10800, while the sum is 32.

The square root of 61245905 is about 7825.9762969230. The cubic root of 61245905 is about 394.1779732260.

The spelling of 61245905 in words is "sixty-one million, two hundred forty-five thousand, nine hundred five".