53667840 has 96 divisors (see below), whose sum is σ = 171793440.
Its totient is φ = 14303232.
The previous prime is 53667833. The next prime is 53667847. The reversal of 53667840 is 4876635.
It is an interprime number because it is at equal distance from previous prime (53667833) and next prime (53667847).
It is a tau number, because it is divible by the number of its divisors (96).
It is not an unprimeable number, because it can be changed into a prime (53667847) 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, 29847 + ... + 31593.
It is an arithmetic number, because the mean of its divisors is an integer number (1789515).
Almost surely, 253667840 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 53667840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85896720).
53667840 is an abundant number, since it is smaller than the sum of its proper divisors (118125600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
53667840 is a wasteful number, since it uses less digits than its factorization.
53667840 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 1777 (or 1757 counting only the distinct ones).
The product of its (nonzero) digits is 120960, while the sum is 39.
The square root of 53667840 is about 7325.8337409472.
The cubic root of 53667840 is about 377.1997290596.
The spelling of 53667840 in words is "fifty-three million, six hundred sixty-seven thousand, eight hundred forty".