75505051 has 2 divisors, whose sum is σ = 75505052. Its totient is φ = 75505050.

The previous prime is 75505039. The next prime is 75505061. The reversal of 75505051 is 15050557.

It is a strong prime.

It is an emirp because it is prime and its reverse (15050557) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75505051 - 2²³ = 67116443 is a prime.

It is equal to p_4422268 and since 75505051 and 4422268 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (75505061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37752525 + 37752526.

It is an arithmetic number, because the mean of its divisors is an integer number (37752526).

Almost surely, 2^75505051 is an apocalyptic number.

75505051 is a deficient number, since it is larger than the sum of its proper divisors (1).

75505051 is an equidigital number, since it uses as much as digits as its factorization.

75505051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4375, while the sum is 28.

The square root of 75505051 is about 8689.3642460194. The cubic root of 75505051 is about 422.6608301955.

The spelling of 75505051 in words is "seventy-five million, five hundred five thousand, fifty-one".