53803421 has 12 divisors (see below), whose sum is σ = 65882880. Its totient is φ = 43689240.

The previous prime is 53803411. The next prime is 53803471. The reversal of 53803421 is 12430835.

It is not a de Polignac number, because 53803421 - 2¹⁴ = 53787037 is a prime.

It is a super-2 number, since 2×53803421² = 5789616222606482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53803411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27965 + ... + 29826.

It is an arithmetic number, because the mean of its divisors is an integer number (5490240).

Almost surely, 2^53803421 is an apocalyptic number.

It is an amenable number.

53803421 is a deficient number, since it is larger than the sum of its proper divisors (12079459).

53803421 is a wasteful number, since it uses less digits than its factorization.

53803421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57824 (or 57817 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 53803421 is about 7335.0815264726. The cubic root of 53803421 is about 377.5171016915.

The spelling of 53803421 in words is "fifty-three million, eight hundred three thousand, four hundred twenty-one".