75280087 has 16 divisors (see below), whose sum is σ = 78835680. Its totient is φ = 71839872.

The previous prime is 75280031. The next prime is 75280111. The reversal of 75280087 is 78008257.

It is a cyclic number.

It is not a de Polignac number, because 75280087 - 2⁷ = 75279959 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 (75280987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 479413 + ... + 479569.

It is an arithmetic number, because the mean of its divisors is an integer number (4927230).

Almost surely, 2^75280087 is an apocalyptic number.

75280087 is a deficient number, since it is larger than the sum of its proper divisors (3555593).

75280087 is a wasteful number, since it uses less digits than its factorization.

75280087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402.

The product of its (nonzero) digits is 31360, while the sum is 37.

The square root of 75280087 is about 8676.4097989894. The cubic root of 75280087 is about 422.2406461207.

The spelling of 75280087 in words is "seventy-five million, two hundred eighty thousand, eighty-seven".