46581561 has 40 divisors (see below), whose sum is σ = 77409024. Its totient is φ = 27721440.

The previous prime is 46581551. The next prime is 46581589. The reversal of 46581561 is 16518564.

46581561 is a `hidden beast` number, since 46 + 58 + 1 + 561 = 666.

It is not a de Polignac number, because 46581561 - 2⁶ = 46581497 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (46581551) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 31930 + ... + 33356.

Almost surely, 2^46581561 is an apocalyptic number.

It is an amenable number.

46581561 is a deficient number, since it is larger than the sum of its proper divisors (30827463).

46581561 is a wasteful number, since it uses less digits than its factorization.

46581561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1483 (or 1474 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 46581561 is about 6825.0685710841. The cubic root of 46581561 is about 359.8084397533.

The spelling of 46581561 in words is "forty-six million, five hundred eighty-one thousand, five hundred sixty-one".