53471340 has 120 divisors (see below), whose sum is σ = 180715920. Its totient is φ = 13156992.

The previous prime is 53471323. The next prime is 53471351. The reversal of 53471340 is 4317435.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 19791 + ... + 22329.

It is an arithmetic number, because the mean of its divisors is an integer number (1505966).

Almost surely, 2^53471340 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 53471340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90357960).

53471340 is an abundant number, since it is smaller than the sum of its proper divisors (127244580).

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

53471340 is a wasteful number, since it uses less digits than its factorization.

53471340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2573 (or 2562 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 53471340 is about 7312.4099994461. The cubic root of 53471340 is about 376.7388050241.

Adding to 53471340 its reverse (4317435), we get a palindrome (57788775).

The spelling of 53471340 in words is "fifty-three million, four hundred seventy-one thousand, three hundred forty".