53771040 has 168 divisors, whose sum is σ = 190877148. Its totient is φ = 14307840.

The previous prime is 53771021. The next prime is 53771057. The reversal of 53771040 is 4017735.

It can be written as a sum of positive squares in 2 ways, for example, as 52359696 + 1411344 = 7236^2 + 1188^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 53770995 and 53771013.

It is an unprimeable number.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 116410 + ... + 116870.

Almost surely, 2^53771040 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 53771040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95438574).

53771040 is an abundant number, since it is smaller than the sum of its proper divisors (137106108).

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

53771040 is an equidigital number, since it uses as much as digits as its factorization.

53771040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 494 (or 471 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 53771040 is about 7332.8739250038. The cubic root of 53771040 is about 377.4413516479.

Adding to 53771040 its reverse (4017735), we get a palindrome (57788775).

The spelling of 53771040 in words is "fifty-three million, seven hundred seventy-one thousand, forty".