75011257 has 8 divisors (see below), whose sum is σ = 79442496. Its totient is φ = 70677552.

The previous prime is 75011231. The next prime is 75011267. The reversal of 75011257 is 75211057.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-75011257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75011267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22798 + ... + 25879.

It is an arithmetic number, because the mean of its divisors is an integer number (9930312).

Almost surely, 2^75011257 is an apocalyptic number.

It is an amenable number.

75011257 is a deficient number, since it is larger than the sum of its proper divisors (4431239).

75011257 is a wasteful number, since it uses less digits than its factorization.

75011257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48767.

The product of its (nonzero) digits is 2450, while the sum is 28.

The square root of 75011257 is about 8660.9039366570. The cubic root of 75011257 is about 421.7374305321.

The spelling of 75011257 in words is "seventy-five million, eleven thousand, two hundred fifty-seven".