53143776 has 240 divisors, whose sum is σ = 186611040. Its totient is φ = 14515200.

The previous prime is 53143771. The next prime is 53143841. The reversal of 53143776 is 67734135.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 53143776.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53143771) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 526126 + ... + 526226.

It is an arithmetic number, because the mean of its divisors is an integer number (777546).

Almost surely, 2^53143776 is an apocalyptic number.

53143776 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53143776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93305520).

53143776 is an abundant number, since it is smaller than the sum of its proper divisors (133467264).

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

53143776 is a wasteful number, since it uses less digits than its factorization.

53143776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159 (or 142 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 53143776 is about 7289.9777777439. The cubic root of 53143776 is about 375.9679314735.

The spelling of 53143776 in words is "fifty-three million, one hundred forty-three thousand, seven hundred seventy-six".