53023340 has 48 divisors (see below), whose sum is σ = 118534752. Its totient is φ = 19854336.

The previous prime is 53023337. The next prime is 53023367. The reversal of 53023340 is 4332035.

It is a super-2 number, since 2×53023340² = 5622949169511200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93899 + ... + 94461.

It is an arithmetic number, because the mean of its divisors is an integer number (2469474).

Almost surely, 2^53023340 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 53023340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (59267376).

53023340 is an abundant number, since it is smaller than the sum of its proper divisors (65511412).

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

53023340 is a wasteful number, since it uses less digits than its factorization.

53023340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 866 (or 864 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 53023340 is about 7281.7127106197. The cubic root of 53023340 is about 375.6837067700.

Adding to 53023340 its reverse (4332035), we get a palindrome (57355375).

The spelling of 53023340 in words is "fifty-three million, twenty-three thousand, three hundred forty".