75257087 has 4 divisors (see below), whose sum is σ = 76288080. Its totient is φ = 74226096.

The previous prime is 75257071. The next prime is 75257093. The reversal of 75257087 is 78075257.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78075257 = 13 ⋅6005789.

It is a cyclic number.

It is not a de Polignac number, because 75257087 - 2⁴ = 75257071 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 (75257027) 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 3 ways as a sum of consecutive naturals, for example, 515387 + ... + 515532.

It is an arithmetic number, because the mean of its divisors is an integer number (19072020).

Almost surely, 2^75257087 is an apocalyptic number.

75257087 is a deficient number, since it is larger than the sum of its proper divisors (1030993).

75257087 is a wasteful number, since it uses less digits than its factorization.

75257087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030992.

The product of its (nonzero) digits is 137200, while the sum is 41.

The square root of 75257087 is about 8675.0842647204. The cubic root of 75257087 is about 422.1976399533.

The spelling of 75257087 in words is "seventy-five million, two hundred fifty-seven thousand, eighty-seven".