52019621 has 2 divisors, whose sum is σ = 52019622. Its totient is φ = 52019620.

The previous prime is 52019603. The next prime is 52019689. The reversal of 52019621 is 12691025.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44702596 + 7317025 = 6686^2 + 2705^2 .

It is a cyclic number.

It is not a de Polignac number, because 52019621 - 2⁶ = 52019557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (52019021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26009810 + 26009811.

It is an arithmetic number, because the mean of its divisors is an integer number (26009811).

Almost surely, 2^52019621 is an apocalyptic number.

It is an amenable number.

52019621 is a deficient number, since it is larger than the sum of its proper divisors (1).

52019621 is an equidigital number, since it uses as much as digits as its factorization.

52019621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 52019621 is about 7212.4628941853. The cubic root of 52019621 is about 373.2980556767.

The spelling of 52019621 in words is "fifty-two million, nineteen thousand, six hundred twenty-one".