53351040 has 128 divisors (see below), whose sum is σ = 174885120. Its totient is φ = 13824000.

The previous prime is 53351021. The next prime is 53351057. The reversal of 53351040 is 4015335.

It is a tau number, because it is divible by the number of its divisors (128).

It is a junction number, because it is equal to n+sod(n) for n = 53350998 and 53351016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70665 + ... + 71415.

It is an arithmetic number, because the mean of its divisors is an integer number (1366290).

Almost surely, 2^53351040 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 53351040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87442560).

53351040 is an abundant number, since it is smaller than the sum of its proper divisors (121534080).

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

53351040 is a wasteful number, since it uses less digits than its factorization.

53351040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 810 (or 798 counting only the distinct ones).

The product of its (nonzero) digits is 900, while the sum is 21.

The square root of 53351040 is about 7304.1796253926. The cubic root of 53351040 is about 376.4560634715.

Adding to 53351040 its reverse (4015335), we get a palindrome (57366375).

The spelling of 53351040 in words is "fifty-three million, three hundred fifty-one thousand, forty".