2053543421 has 8 divisors (see below), whose sum is σ = 2085976704. Its totient is φ = 2021293440.

The previous prime is 2053543417. The next prime is 2053543433. The reversal of 2053543421 is 1243453502.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2053543421 - 2² = 2053543417 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2053540421) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23156 + ... + 68141.

It is an arithmetic number, because the mean of its divisors is an integer number (260747088).

Almost surely, 2^2053543421 is an apocalyptic number.

It is an amenable number.

2053543421 is a deficient number, since it is larger than the sum of its proper divisors (32433283).

2053543421 is an equidigital number, since it uses as much as digits as its factorization.

2053543421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91651.

The product of its (nonzero) digits is 14400, while the sum is 29.

The square root of 2053543421 is about 45316.0393348757. The cubic root of 2053543421 is about 1271.0655948012.

Adding to 2053543421 its reverse (1243453502), we get a palindrome (3296996923).

The spelling of 2053543421 in words is "two billion, fifty-three million, five hundred forty-three thousand, four hundred twenty-one".