61055605 has 8 divisors (see below), whose sum is σ = 78902712. Its totient is φ = 45087168.

The previous prime is 61055597. The next prime is 61055609. The reversal of 61055605 is 50655016.

It can be written as a sum of positive squares in 4 ways, for example, as 729316 + 60326289 = 854^2 + 7767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61055605 - 2³ = 61055597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61055609) 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, 469594 + ... + 469723.

It is an arithmetic number, because the mean of its divisors is an integer number (9862839).

Almost surely, 2^61055605 is an apocalyptic number.

61055605 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

61055605 is a deficient number, since it is larger than the sum of its proper divisors (17847107).

61055605 is a wasteful number, since it uses less digits than its factorization.

61055605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939335.

The product of its (nonzero) digits is 4500, while the sum is 28.

The square root of 61055605 is about 7813.8086104025. The cubic root of 61055605 is about 393.7692934193.

The spelling of 61055605 in words is "sixty-one million, fifty-five thousand, six hundred five".