361104561 has 24 divisors (see below), whose sum is σ = 545219584. Its totient is φ = 238820400.

The previous prime is 361104559. The next prime is 361104581. The reversal of 361104561 is 165401163.

361104561 is a `hidden beast` number, since 3 + 611 + 0 + 45 + 6 + 1 = 666.

It is not a de Polignac number, because 361104561 - 2¹ = 361104559 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (361104511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25011 + ... + 36711.

Almost surely, 2^361104561 is an apocalyptic number.

It is an amenable number.

361104561 is a deficient number, since it is larger than the sum of its proper divisors (184115023).

361104561 is a wasteful number, since it uses less digits than its factorization.

361104561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11843 (or 11831 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 361104561 is about 19002.7514060464. The cubic root of 361104561 is about 712.1054746586.

The spelling of 361104561 in words is "three hundred sixty-one million, one hundred four thousand, five hundred sixty-one".