75526256213 has 2 divisors, whose sum is σ = 75526256214. Its totient is φ = 75526256212.

The previous prime is 75526256107. The next prime is 75526256231. The reversal of 75526256213 is 31265262557.

Together with next prime (75526256231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73561373284 + 1964882929 = 271222^2 + 44327^2 .

It is an emirp because it is prime and its reverse (31265262557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75526256213 - 2¹² = 75526252117 is a prime.

It is a super-2 number, since 2×75526256213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75526256243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37763128106 + 37763128107.

It is an arithmetic number, because the mean of its divisors is an integer number (37763128107).

Almost surely, 2^75526256213 is an apocalyptic number.

It is an amenable number.

75526256213 is a deficient number, since it is larger than the sum of its proper divisors (1).

75526256213 is an equidigital number, since it uses as much as digits as its factorization.

75526256213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 756000, while the sum is 44.

The spelling of 75526256213 in words is "seventy-five billion, five hundred twenty-six million, two hundred fifty-six thousand, two hundred thirteen".