53030840 has 16 divisors (see below), whose sum is σ = 119319480. Its totient is φ = 21212320.

The previous prime is 53030833. The next prime is 53030851. The reversal of 53030840 is 4803035.

It is a super-2 number, since 2×53030840² = 5624539982211200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 662846 + ... + 662925.

Almost surely, 2^53030840 is an apocalyptic number.

It is an amenable number.

53030840 is an abundant number, since it is smaller than the sum of its proper divisors (66288640).

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

53030840 is a wasteful number, since it uses less digits than its factorization.

53030840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1325782 (or 1325778 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 53030840 is about 7282.2276811426. The cubic root of 53030840 is about 375.7014190640.

Adding to 53030840 its reverse (4803035), we get a palindrome (57833875).

The spelling of 53030840 in words is "fifty-three million, thirty thousand, eight hundred forty".