75513869 has 2 divisors, whose sum is σ = 75513870. Its totient is φ = 75513868.

The previous prime is 75513857. The next prime is 75513877. The reversal of 75513869 is 96831557.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57957769 + 17556100 = 7613^2 + 4190^2 .

It is an emirp because it is prime and its reverse (96831557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75513869 - 2¹⁶ = 75448333 is a prime.

It is a super-2 number, since 2×75513869² = 11404688822698322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75513829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37756934 + 37756935.

It is an arithmetic number, because the mean of its divisors is an integer number (37756935).

Almost surely, 2^75513869 is an apocalyptic number.

It is an amenable number.

75513869 is a deficient number, since it is larger than the sum of its proper divisors (1).

75513869 is an equidigital number, since it uses as much as digits as its factorization.

75513869 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 75513869 is about 8689.8716331140. The cubic root of 75513869 is about 422.6772833028.

The spelling of 75513869 in words is "seventy-five million, five hundred thirteen thousand, eight hundred sixty-nine".