61537516 has 12 divisors (see below), whose sum is σ = 108092880. Its totient is φ = 30653840.

The previous prime is 61537513. The next prime is 61537543. The reversal of 61537516 is 61573516.

It is not an unprimeable number, because it can be changed into a prime (61537513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27520 + ... + 29671.

It is an arithmetic number, because the mean of its divisors is an integer number (9007740).

Almost surely, 2^61537516 is an apocalyptic number.

It is an amenable number.

61537516 is a deficient number, since it is larger than the sum of its proper divisors (46555364).

61537516 is a wasteful number, since it uses less digits than its factorization.

61537516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57464 (or 57462 counting only the distinct ones).

The product of its digits is 18900, while the sum is 34.

The square root of 61537516 is about 7844.5851388075. The cubic root of 61537516 is about 394.8025846818.

The spelling of 61537516 in words is "sixty-one million, five hundred thirty-seven thousand, five hundred sixteen".