61041861 has 12 divisors (see below), whose sum is σ = 90048192. Its totient is φ = 39828456.

The previous prime is 61041859. The next prime is 61041863. The reversal of 61041861 is 16814016.

61041861 is a `hidden beast` number, since 610 + 41 + 8 + 6 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (61041859) and next prime (61041863).

It is not a de Polignac number, because 61041861 - 2¹ = 61041859 is a prime.

It is a super-2 number, since 2×61041861² = 7452217588686642, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61041863) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 71731 + ... + 72576.

It is an arithmetic number, because the mean of its divisors is an integer number (7504016).

Almost surely, 2^61041861 is an apocalyptic number.

It is an amenable number.

61041861 is a deficient number, since it is larger than the sum of its proper divisors (29006331).

61041861 is a wasteful number, since it uses less digits than its factorization.

61041861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144360 (or 144357 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 61041861 is about 7812.9290922163. The cubic root of 61041861 is about 393.7397445553.

Adding to 61041861 its reverse (16814016), we get a palindrome (77855877).

The spelling of 61041861 in words is "sixty-one million, forty-one thousand, eight hundred sixty-one".