52121737 has 4 divisors (see below), whose sum is σ = 53105220. Its totient is φ = 51138256.

The previous prime is 52121723. The next prime is 52121743. The reversal of 52121737 is 73712125.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42237001 + 9884736 = 6499^2 + 3144^2 .

It is a cyclic number.

It is not a de Polignac number, because 52121737 - 2¹¹ = 52119689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52121747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 491662 + ... + 491767.

It is an arithmetic number, because the mean of its divisors is an integer number (13276305).

Almost surely, 2^52121737 is an apocalyptic number.

It is an amenable number.

52121737 is a deficient number, since it is larger than the sum of its proper divisors (983483).

52121737 is an equidigital number, since it uses as much as digits as its factorization.

52121737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 983482.

The product of its digits is 2940, while the sum is 28.

The square root of 52121737 is about 7219.5385586615. The cubic root of 52121737 is about 373.5421609286.

The spelling of 52121737 in words is "fifty-two million, one hundred twenty-one thousand, seven hundred thirty-seven".