52123921 has 8 divisors (see below), whose sum is σ = 55394280. Its totient is φ = 48876288.

The previous prime is 52123919. The next prime is 52123937. The reversal of 52123921 is 12932125.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 801025 + 51322896 = 895^2 + 7164^2 .

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 52123921 - 2¹ = 52123919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52123901) 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, 826 + ... + 10243.

It is an arithmetic number, because the mean of its divisors is an integer number (6924285).

Almost surely, 2^52123921 is an apocalyptic number.

It is an amenable number.

52123921 is a deficient number, since it is larger than the sum of its proper divisors (3270359).

52123921 is a wasteful number, since it uses less digits than its factorization.

52123921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11363.

The product of its digits is 1080, while the sum is 25.

The square root of 52123921 is about 7219.6898132815. The cubic root of 52123921 is about 373.5473782316.

It can be divided in two parts, 521 and 23921, that added together give a palindrome (24442).

The spelling of 52123921 in words is "fifty-two million, one hundred twenty-three thousand, nine hundred twenty-one".