53859561 has 8 divisors (see below), whose sum is σ = 82071744. Its totient is φ = 30776880.

The previous prime is 53859539. The next prime is 53859569. The reversal of 53859561 is 16595835.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53859561 - 2¹⁵ = 53826793 is a prime.

It is a super-2 number, since 2×53859561² = 5801704622225442, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (53859569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1282350 + ... + 1282391.

It is an arithmetic number, because the mean of its divisors is an integer number (10258968).

Almost surely, 2^53859561 is an apocalyptic number.

It is an amenable number.

53859561 is a deficient number, since it is larger than the sum of its proper divisors (28212183).

53859561 is a wasteful number, since it uses less digits than its factorization.

53859561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2564751.

The product of its digits is 162000, while the sum is 42.

The square root of 53859561 is about 7338.9073437399. The cubic root of 53859561 is about 377.6483600301.

The spelling of 53859561 in words is "fifty-three million, eight hundred fifty-nine thousand, five hundred sixty-one".