75501257 has 6 divisors (see below), whose sum is σ = 81755982. Its totient is φ = 69693312.

The previous prime is 75501241. The next prime is 75501259. The reversal of 75501257 is 75210557.

It can be written as a sum of positive squares in 3 ways, for example, as 9388096 + 66113161 = 3064^2 + 8131^2 .

It is not a de Polignac number, because 75501257 - 2⁴ = 75501241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (75501259) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 223208 + ... + 223545.

It is an arithmetic number, because the mean of its divisors is an integer number (13625997).

Almost surely, 2^75501257 is an apocalyptic number.

It is an amenable number.

75501257 is a deficient number, since it is larger than the sum of its proper divisors (6254725).

75501257 is a wasteful number, since it uses less digits than its factorization.

75501257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446779 (or 446766 counting only the distinct ones).

The product of its (nonzero) digits is 12250, while the sum is 32.

The square root of 75501257 is about 8689.1459304123. The cubic root of 75501257 is about 422.6537507483.

The spelling of 75501257 in words is "seventy-five million, five hundred one thousand, two hundred fifty-seven".