52403021 has 8 divisors (see below), whose sum is σ = 57261600. Its totient is φ = 47560240.

The previous prime is 52403017. The next prime is 52403023. The reversal of 52403021 is 12030425.

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 52403021 - 2² = 52403017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52403023) 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, 3635 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (7157700).

Almost surely, 2^52403021 is an apocalyptic number.

It is an amenable number.

52403021 is a deficient number, since it is larger than the sum of its proper divisors (4858579).

52403021 is a wasteful number, since it uses less digits than its factorization.

52403021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7899.

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 52403021 is about 7238.9930929653. The cubic root of 52403021 is about 374.2129174549.

Adding to 52403021 its reverse (12030425), we get a palindrome (64433446).

The spelling of 52403021 in words is "fifty-two million, four hundred three thousand, twenty-one".