75518969 has 2 divisors, whose sum is σ = 75518970. Its totient is φ = 75518968.

The previous prime is 75518957. The next prime is 75518999. The reversal of 75518969 is 96981557.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67453369 + 8065600 = 8213^2 + 2840^2 .

It is an emirp because it is prime and its reverse (96981557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75518969 - 2⁴ = 75518953 is a prime.

It is a super-2 number, since 2×75518969² = 11406229357645922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (75518909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37759484 + 37759485.

It is an arithmetic number, because the mean of its divisors is an integer number (37759485).

Almost surely, 2^75518969 is an apocalyptic number.

It is an amenable number.

75518969 is a deficient number, since it is larger than the sum of its proper divisors (1).

75518969 is an equidigital number, since it uses as much as digits as its factorization.

75518969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 50.

The square root of 75518969 is about 8690.1650732308. The cubic root of 75518969 is about 422.6867985775.

The spelling of 75518969 in words is "seventy-five million, five hundred eighteen thousand, nine hundred sixty-nine".