61505116 has 48 divisors (see below), whose sum is σ = 119024640. Its totient is φ = 27682560.

The previous prime is 61505113. The next prime is 61505131. The reversal of 61505116 is 61150516.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61505113) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343515 + ... + 343693.

It is an arithmetic number, because the mean of its divisors is an integer number (2479680).

Almost surely, 2^61505116 is an apocalyptic number.

It is an amenable number.

61505116 is a deficient number, since it is larger than the sum of its proper divisors (57519524).

61505116 is a wasteful number, since it uses less digits than its factorization.

61505116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 25.

The square root of 61505116 is about 7842.5197481422. The cubic root of 61505116 is about 394.7332835996.

The spelling of 61505116 in words is "sixty-one million, five hundred five thousand, one hundred sixteen".