75900257 has 4 divisors (see below), whose sum is σ = 80364996. Its totient is φ = 71435520.

The previous prime is 75900239. The next prime is 75900271. The reversal of 75900257 is 75200957.

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

It can be written as a sum of positive squares in 2 ways, for example, as 55115776 + 20784481 = 7424^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 75900257 - 2¹⁸ = 75638113 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75900457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2232344 + ... + 2232377.

It is an arithmetic number, because the mean of its divisors is an integer number (20091249).

Almost surely, 2^75900257 is an apocalyptic number.

It is an amenable number.

75900257 is a deficient number, since it is larger than the sum of its proper divisors (4464739).

75900257 is a wasteful number, since it uses less digits than its factorization.

75900257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464738.

The product of its (nonzero) digits is 22050, while the sum is 35.

The square root of 75900257 is about 8712.0753555051. The cubic root of 75900257 is about 423.3969730243.

The spelling of 75900257 in words is "seventy-five million, nine hundred thousand, two hundred fifty-seven".