53889561 has 24 divisors (see below), whose sum is σ = 85419360. Its totient is φ = 32467200.

The previous prime is 53889557. The next prime is 53889581. The reversal of 53889561 is 16598835.

53889561 is a `hidden beast` number, since 5 + 3 + 8 + 89 + 561 = 666.

It is not a de Polignac number, because 53889561 - 2² = 53889557 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53889581) 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, 16201 + ... + 19241.

It is an arithmetic number, because the mean of its divisors is an integer number (3559140).

Almost surely, 2^53889561 is an apocalyptic number.

It is an amenable number.

53889561 is a deficient number, since it is larger than the sum of its proper divisors (31529799).

53889561 is a wasteful number, since it uses less digits than its factorization.

53889561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237 (or 3234 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 53889561 is about 7340.9509601958. The cubic root of 53889561 is about 377.7184642525.

The spelling of 53889561 in words is "fifty-three million, eight hundred eighty-nine thousand, five hundred sixty-one".