48691566 has 144 divisors (see below), whose sum is σ = 141747840. Its totient is φ = 11702880.

The previous prime is 48691549. The next prime is 48691613. The reversal of 48691566 is 66519684.

48691566 is a `hidden beast` number, since 4 + 86 + 9 + 1 + 566 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1132341 + ... + 1132383.

It is an arithmetic number, because the mean of its divisors is an integer number (984360).

Almost surely, 2^48691566 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 48691566, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (70873920).

48691566 is an abundant number, since it is smaller than the sum of its proper divisors (93056274).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

48691566 is a wasteful number, since it uses less digits than its factorization.

48691566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 85 counting only the distinct ones).

The product of its digits is 311040, while the sum is 45.

The square root of 48691566 is about 6977.9342215300. The cubic root of 48691566 is about 365.1611623320.

The spelling of 48691566 in words is "forty-eight million, six hundred ninety-one thousand, five hundred sixty-six".