52144921 has 2 divisors, whose sum is σ = 52144922. Its totient is φ = 52144920.

The previous prime is 52144913. The next prime is 52144931. The reversal of 52144921 is 12944125.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28515600 + 23629321 = 5340^2 + 4861^2 .

It is a cyclic number.

It is not a de Polignac number, because 52144921 - 2³ = 52144913 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 52144921.

It is not a weakly prime, because it can be changed into another prime (52144931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26072460 + 26072461.

It is an arithmetic number, because the mean of its divisors is an integer number (26072461).

Almost surely, 2^52144921 is an apocalyptic number.

It is an amenable number.

52144921 is a deficient number, since it is larger than the sum of its proper divisors (1).

52144921 is an equidigital number, since it uses as much as digits as its factorization.

52144921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 52144921 is about 7221.1440229371. The cubic root of 52144921 is about 373.5975371704.

The spelling of 52144921 in words is "fifty-two million, one hundred forty-four thousand, nine hundred twenty-one".