52121503 has 8 divisors (see below), whose sum is σ = 62702720. Its totient is φ = 42324120.

The previous prime is 52121479. The next prime is 52121521. The reversal of 52121503 is 30512125.

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 52121503 - 2⁵ = 52121471 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52121533) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 195813 + ... + 196078.

It is an arithmetic number, because the mean of its divisors is an integer number (7837840).

Almost surely, 2^52121503 is an apocalyptic number.

52121503 is a deficient number, since it is larger than the sum of its proper divisors (10581217).

52121503 is a wasteful number, since it uses less digits than its factorization.

52121503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 391917.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 52121503 is about 7219.5223526214. The cubic root of 52121503 is about 373.5416019232.

Adding to 52121503 its reverse (30512125), we get a palindrome (82633628).

The spelling of 52121503 in words is "fifty-two million, one hundred twenty-one thousand, five hundred three".