61516245 has 32 divisors (see below), whose sum is σ = 116121600. Its totient is φ = 27213120.

The previous prime is 61516223. The next prime is 61516249. The reversal of 61516245 is 54261516.

It is not a de Polignac number, because 61516245 - 2⁶ = 61516181 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61516249) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6195 + ... + 12704.

It is an arithmetic number, because the mean of its divisors is an integer number (3628800).

Almost surely, 2^61516245 is an apocalyptic number.

It is an amenable number.

61516245 is a deficient number, since it is larger than the sum of its proper divisors (54605355).

61516245 is a wasteful number, since it uses less digits than its factorization.

61516245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18945.

The product of its digits is 7200, while the sum is 30.

The square root of 61516245 is about 7843.2292456615. The cubic root of 61516245 is about 394.7570904093.

The spelling of 61516245 in words is "sixty-one million, five hundred sixteen thousand, two hundred forty-five".