61155064 has 32 divisors (see below), whose sum is σ = 119831040. Its totient is φ = 29224800.

The previous prime is 61155049. The next prime is 61155089. The reversal of 61155064 is 46055116.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19099 + ... + 22069.

It is an arithmetic number, because the mean of its divisors is an integer number (3744720).

Almost surely, 2^61155064 is an apocalyptic number.

It is an amenable number.

61155064 is a deficient number, since it is larger than the sum of its proper divisors (58675976).

61155064 is a wasteful number, since it uses less digits than its factorization.

61155064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3091 (or 3087 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 61155064 is about 7820.1703306258. The cubic root of 61155064 is about 393.9829929014.

The spelling of 61155064 in words is "sixty-one million, one hundred fifty-five thousand, sixty-four".