52738021 has 8 divisors (see below), whose sum is σ = 61409664. Its totient is φ = 44350800.

The previous prime is 52738009. The next prime is 52738043. The reversal of 52738021 is 12083725.

52738021 = 1100² + 1101² + ... + 1141².

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 52738021 - 2⁵ = 52737989 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 (52738001) 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, 70705 + ... + 71446.

It is an arithmetic number, because the mean of its divisors is an integer number (7676208).

Almost surely, 2^52738021 is an apocalyptic number.

It is an amenable number.

52738021 is a deficient number, since it is larger than the sum of its proper divisors (8671643).

52738021 is a wasteful number, since it uses less digits than its factorization.

52738021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142211.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 52738021 is about 7262.0948079738. The cubic root of 52738021 is about 375.0086421712.

The spelling of 52738021 in words is "fifty-two million, seven hundred thirty-eight thousand, twenty-one".