61041555 has 24 divisors (see below), whose sum is σ = 105992640. Its totient is φ = 32497920.

The previous prime is 61041551. The next prime is 61041557. The reversal of 61041555 is 55514016.

It is a happy number.

61041555 is a `hidden beast` number, since 6 + 104 + 1 + 555 = 666.

It is not a de Polignac number, because 61041555 - 2² = 61041551 is a prime.

It is a super-3 number, since 3×61041555³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61041551) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40251 + ... + 41739.

It is an arithmetic number, because the mean of its divisors is an integer number (4416360).

Almost surely, 2^61041555 is an apocalyptic number.

61041555 is a deficient number, since it is larger than the sum of its proper divisors (44951085).

61041555 is a wasteful number, since it uses less digits than its factorization.

61041555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2411 (or 2408 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 61041555 is about 7812.9095092673. The cubic root of 61041555 is about 393.7390866212.

The spelling of 61041555 in words is "sixty-one million, forty-one thousand, five hundred fifty-five".