521025541103 has 2 divisors, whose sum is σ = 521025541104. Its totient is φ = 521025541102.

The previous prime is 521025541051. The next prime is 521025541121. The reversal of 521025541103 is 301145520125.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 521025541103 - 2¹⁸ = 521025278959 is a prime.

It is a super-2 number, since 2×521025541103² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (521025541133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 260512770551 + 260512770552.

It is an arithmetic number, because the mean of its divisors is an integer number (260512770552).

Almost surely, 2^521025541103 is an apocalyptic number.

521025541103 is a deficient number, since it is larger than the sum of its proper divisors (1).

521025541103 is an equidigital number, since it uses as much as digits as its factorization.

521025541103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6000, while the sum is 29.

The spelling of 521025541103 in words is "five hundred twenty-one billion, twenty-five million, five hundred forty-one thousand, one hundred three".