61155164 has 24 divisors (see below), whose sum is σ = 123863040. Its totient is φ = 25876656.

The previous prime is 61155161. The next prime is 61155173. The reversal of 61155164 is 46155116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61155161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11612 + ... + 16035.

It is an arithmetic number, because the mean of its divisors is an integer number (5160960).

Almost surely, 2^61155164 is an apocalyptic number.

It is an amenable number.

61155164 is an abundant number, since it is smaller than the sum of its proper divisors (62707876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61155164 is a wasteful number, since it uses less digits than its factorization.

61155164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27737 (or 27735 counting only the distinct ones).

The product of its digits is 3600, while the sum is 29.

The square root of 61155164 is about 7820.1767243458. The cubic root of 61155164 is about 393.9832076466.

The spelling of 61155164 in words is "sixty-one million, one hundred fifty-five thousand, one hundred sixty-four".