75112257 has 32 divisors (see below), whose sum is σ = 113117184. Its totient is φ = 43934400.

The previous prime is 75112253. The next prime is 75112267. The reversal of 75112257 is 75221157.

It is not a de Polignac number, because 75112257 - 2² = 75112253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (75112253) 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 31 ways as a sum of consecutive naturals, for example, 277032 + ... + 277302.

It is an arithmetic number, because the mean of its divisors is an integer number (3534912).

Almost surely, 2^75112257 is an apocalyptic number.

It is an amenable number.

75112257 is a deficient number, since it is larger than the sum of its proper divisors (38004927).

75112257 is a wasteful number, since it uses less digits than its factorization.

75112257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549.

The product of its digits is 4900, while the sum is 30.

The square root of 75112257 is about 8666.7327753889. The cubic root of 75112257 is about 421.9266304766.

Subtracting 75112257 from its reverse (75221157), we obtain a square (108900 = 330²).

The spelling of 75112257 in words is "seventy-five million, one hundred twelve thousand, two hundred fifty-seven".