75441249 has 12 divisors (see below), whose sum is σ = 117353236. Its totient is φ = 46425312.

The previous prime is 75441241. The next prime is 75441253. The reversal of 75441249 is 94214457.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 3920400 + 71520849 = 1980^2 + 8457^2 .

It is not a de Polignac number, because 75441249 - 2³ = 75441241 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (75441241) 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 11 ways as a sum of consecutive naturals, for example, 322282 + ... + 322515.

Almost surely, 2^75441249 is an apocalyptic number.

It is an amenable number.

75441249 is a deficient number, since it is larger than the sum of its proper divisors (41911987).

75441249 is a wasteful number, since it uses less digits than its factorization.

75441249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644816 (or 644813 counting only the distinct ones).

The product of its digits is 40320, while the sum is 36.

The square root of 75441249 is about 8685.6922003949. The cubic root of 75441249 is about 422.5417467473.

The spelling of 75441249 in words is "seventy-five million, four hundred forty-one thousand, two hundred forty-nine".