53559381 has 8 divisors (see below), whose sum is σ = 73073440. Its totient is φ = 34875792.

The previous prime is 53559379. The next prime is 53559383. The reversal of 53559381 is 18395535.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53559379) and next prime (53559383).

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

It is not a de Polignac number, because 53559381 - 2¹ = 53559379 is a prime.

It is a super-2 number, since 2×53559381² = 5737214586206322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53559383) 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, 207466 + ... + 207723.

It is an arithmetic number, because the mean of its divisors is an integer number (9134180).

Almost surely, 2^53559381 is an apocalyptic number.

It is an amenable number.

53559381 is a deficient number, since it is larger than the sum of its proper divisors (19514059).

53559381 is a wasteful number, since it uses less digits than its factorization.

53559381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 415235.

The product of its digits is 81000, while the sum is 39.

The square root of 53559381 is about 7318.4274950292. The cubic root of 53559381 is about 376.9454594906.

The spelling of 53559381 in words is "fifty-three million, five hundred fifty-nine thousand, three hundred eighty-one".