53421420 has 48 divisors (see below), whose sum is σ = 161088480. Its totient is φ = 13149696.

The previous prime is 53421419. The next prime is 53421461. The reversal of 53421420 is 2412435.

It is a super-2 number, since 2×53421420² = 5707696229632800, which contains 22 as substring.

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, 33465 + ... + 35024.

It is an arithmetic number, because the mean of its divisors is an integer number (3356010).

Almost surely, 2^53421420 is an apocalyptic number.

It is an amenable number.

53421420 is an abundant number, since it is smaller than the sum of its proper divisors (107667060).

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

53421420 is a wasteful number, since it uses less digits than its factorization.

53421420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68514 (or 68512 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 53421420 is about 7308.9958270613. The cubic root of 53421420 is about 376.6215293847.

Adding to 53421420 its reverse (2412435), we get a palindrome (55833855).

The spelling of 53421420 in words is "fifty-three million, four hundred twenty-one thousand, four hundred twenty".