52221501 has 24 divisors (see below), whose sum is σ = 80331264. Its totient is φ = 32576640.

The previous prime is 52221493. The next prime is 52221509. The reversal of 52221501 is 10512225.

It is an interprime number because it is at equal distance from previous prime (52221493) and next prime (52221509).

It is not a de Polignac number, because 52221501 - 2³ = 52221493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52221509) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28330 + ... + 30116.

It is an arithmetic number, because the mean of its divisors is an integer number (3347136).

Almost surely, 2^52221501 is an apocalyptic number.

52221501 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

52221501 is a deficient number, since it is larger than the sum of its proper divisors (28109763).

52221501 is a wasteful number, since it uses less digits than its factorization.

52221501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2001 (or 1998 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 18.

The square root of 52221501 is about 7226.4445614700. Note that the first 3 decimals coincide. The cubic root of 52221501 is about 373.7803360872.

Adding to 52221501 its reverse (10512225), we get a palindrome (62733726).

The spelling of 52221501 in words is "fifty-two million, two hundred twenty-one thousand, five hundred one".