521125037 has 2 divisors, whose sum is σ = 521125038. Its totient is φ = 521125036.

The previous prime is 521124997. The next prime is 521125043. The reversal of 521125037 is 730521125.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 314743081 + 206381956 = 17741^2 + 14366^2 .

It is a cyclic number.

It is not a de Polignac number, because 521125037 - 2¹⁰ = 521124013 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 521124997 and 521125015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521125537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260562518 + 260562519.

It is an arithmetic number, because the mean of its divisors is an integer number (260562519).

Almost surely, 2^521125037 is an apocalyptic number.

It is an amenable number.

521125037 is a deficient number, since it is larger than the sum of its proper divisors (1).

521125037 is an equidigital number, since it uses as much as digits as its factorization.

521125037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 521125037 is about 22828.1632419255. The cubic root of 521125037 is about 804.7246654279.

The spelling of 521125037 in words is "five hundred twenty-one million, one hundred twenty-five thousand, thirty-seven".