75550087 has 4 divisors (see below), whose sum is σ = 75718800. Its totient is φ = 75381376.

The previous prime is 75550081. The next prime is 75550093. The reversal of 75550087 is 78005557.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (75550081) and next prime (75550093).

It is a cyclic number.

It is not a de Polignac number, because 75550087 - 2¹⁹ = 75025799 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75550081) 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 in 3 ways as a sum of consecutive naturals, for example, 83683 + ... + 84580.

It is an arithmetic number, because the mean of its divisors is an integer number (18929700).

Almost surely, 2^75550087 is an apocalyptic number.

75550087 is a deficient number, since it is larger than the sum of its proper divisors (168713).

75550087 is a wasteful number, since it uses less digits than its factorization.

75550087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168712.

The product of its (nonzero) digits is 49000, while the sum is 37.

The square root of 75550087 is about 8691.9553036126. The cubic root of 75550087 is about 422.7448473996.

The spelling of 75550087 in words is "seventy-five million, five hundred fifty thousand, eighty-seven".