53045340 has 144 divisors (see below), whose sum is σ = 163860480. Its totient is φ = 12804480.

The previous prime is 53045327. The next prime is 53045347. The reversal of 53045340 is 4354035.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 53045340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53045347) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 671421 + ... + 671499.

It is an arithmetic number, because the mean of its divisors is an integer number (1137920).

Almost surely, 2^53045340 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 53045340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81930240).

53045340 is an abundant number, since it is smaller than the sum of its proper divisors (110815140).

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

53045340 is a wasteful number, since it uses less digits than its factorization.

53045340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160 (or 139 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 24.

The square root of 53045340 is about 7283.2231875729. The cubic root of 53045340 is about 375.7356580976.

Adding to 53045340 its reverse (4354035), we get a palindrome (57399375).

The spelling of 53045340 in words is "fifty-three million, forty-five thousand, three hundred forty".