61044165 has 64 divisors (see below), whose sum is σ = 133593600. Its totient is φ = 25754112.

The previous prime is 61044157. The next prime is 61044197. The reversal of 61044165 is 56144016.

61044165 is a `hidden beast` number, since 610 + 4 + 41 + 6 + 5 = 666.

It is not a de Polignac number, because 61044165 - 2³ = 61044157 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9801 + ... + 14769.

It is an arithmetic number, because the mean of its divisors is an integer number (2087400).

Almost surely, 2^61044165 is an apocalyptic number.

61044165 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61044165 is an abundant number, since it is smaller than the sum of its proper divisors (72549435).

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

61044165 is a wasteful number, since it uses less digits than its factorization.

61044165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5003 (or 4997 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 61044165 is about 7813.0765387266. The cubic root of 61044165 is about 393.7446983413.

The spelling of 61044165 in words is "sixty-one million, forty-four thousand, one hundred sixty-five".