75528641 has 2 divisors, whose sum is σ = 75528642. Its totient is φ = 75528640.

The previous prime is 75528613. The next prime is 75528653. The reversal of 75528641 is 14682557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67240000 + 8288641 = 8200^2 + 2879^2 .

It is an emirp because it is prime and its reverse (14682557) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75528641 is a prime.

It is a super-2 number, since 2×75528641² = 11409151222613762, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 75528595 and 75528604.

It is not a weakly prime, because it can be changed into another prime (75578641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37764320 + 37764321.

It is an arithmetic number, because the mean of its divisors is an integer number (37764321).

Almost surely, 2^75528641 is an apocalyptic number.

It is an amenable number.

75528641 is a deficient number, since it is larger than the sum of its proper divisors (1).

75528641 is an equidigital number, since it uses as much as digits as its factorization.

75528641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 75528641 is about 8690.7215465691. The cubic root of 75528641 is about 422.7048428395.

The spelling of 75528641 in words is "seventy-five million, five hundred twenty-eight thousand, six hundred forty-one".