75244257 has 12 divisors (see below), whose sum is σ = 118566864. Its totient is φ = 45602520.

The previous prime is 75244229. The next prime is 75244289.

It is a happy number.

75244257 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 75244257 - 2⁷ = 75244129 is a prime.

It is a super-2 number, since 2×75244257² = 11323396422964098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (75244207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 379923 + ... + 380120.

It is an arithmetic number, because the mean of its divisors is an integer number (9880572).

Almost surely, 2^75244257 is an apocalyptic number.

It is an amenable number.

75244257 is a deficient number, since it is larger than the sum of its proper divisors (43322607).

75244257 is a wasteful number, since it uses less digits than its factorization.

75244257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760060 (or 760057 counting only the distinct ones).

The product of its digits is 78400, while the sum is 36.

The square root of 75244257 is about 8674.3447591158. The cubic root of 75244257 is about 422.1736461840.

It can be divided in two parts, 7524 and 4257, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 75244257 in words is "seventy-five million, two hundred forty-four thousand, two hundred fifty-seven".