52730421 has 8 divisors (see below), whose sum is σ = 73364160. Its totient is φ = 33625152.

The previous prime is 52730401. The next prime is 52730437. The reversal of 52730421 is 12403725.

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

It is not a de Polignac number, because 52730421 - 2⁹ = 52729909 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 52730391 and 52730400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52730401) 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, 382036 + ... + 382173.

It is an arithmetic number, because the mean of its divisors is an integer number (9170520).

Almost surely, 2^52730421 is an apocalyptic number.

It is an amenable number.

52730421 is a deficient number, since it is larger than the sum of its proper divisors (20633739).

52730421 is a wasteful number, since it uses less digits than its factorization.

52730421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 764235.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 52730421 is about 7261.5715241262. The cubic root of 52730421 is about 374.9906273213.

The spelling of 52730421 in words is "fifty-two million, seven hundred thirty thousand, four hundred twenty-one".