75005501 has 2 divisors, whose sum is σ = 75005502. Its totient is φ = 75005500.

The previous prime is 75005473. The next prime is 75005503. The reversal of 75005501 is 10550057.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40018276 + 34987225 = 6326^2 + 5915^2 .

It is a cyclic number.

It is not a de Polignac number, because 75005501 - 2¹⁰ = 75004477 is a prime.

It is a super-2 number, since 2×75005501² = 11251650360522002, which contains 22 as substring.

Together with 75005503, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75005503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37502750 + 37502751.

It is an arithmetic number, because the mean of its divisors is an integer number (37502751).

Almost surely, 2^75005501 is an apocalyptic number.

It is an amenable number.

75005501 is a deficient number, since it is larger than the sum of its proper divisors (1).

75005501 is an equidigital number, since it uses as much as digits as its factorization.

75005501 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 875, while the sum is 23.

The square root of 75005501 is about 8660.5716324039. The cubic root of 75005501 is about 421.7266428946.

Adding to 75005501 its reverse (10550057), we get a palindrome (85555558).

The spelling of 75005501 in words is "seventy-five million, five thousand, five hundred one".