53861280 has 144 divisors (see below), whose sum is σ = 186937632. Its totient is φ = 12928000.

The previous prime is 53861267. The next prime is 53861293. The reversal of 53861280 is 8216835.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53861267) and next prime (53861293).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 533230 + ... + 533330.

It is an arithmetic number, because the mean of its divisors is an integer number (1298178).

Almost surely, 2^53861280 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 53861280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93468816).

53861280 is an abundant number, since it is smaller than the sum of its proper divisors (133076352).

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

53861280 is a wasteful number, since it uses less digits than its factorization.

53861280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 122 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The square root of 53861280 is about 7339.0244583323. The cubic root of 53861280 is about 377.6523777050.

It can be divided in two parts, 5386 and 1280, that added together give a palindrome (6666).

The spelling of 53861280 in words is "fifty-three million, eight hundred sixty-one thousand, two hundred eighty".