75799957 has 4 divisors (see below), whose sum is σ = 80258796. Its totient is φ = 71341120.

The previous prime is 75799951. The next prime is 75799963. The reversal of 75799957 is 75999757.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (75799951) and next prime (75799963).

It can be written as a sum of positive squares in 2 ways, for example, as 70459236 + 5340721 = 8394^2 + 2311^2 .

It is a cyclic number.

It is not a de Polignac number, because 75799957 - 2¹⁵ = 75767189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75799951) 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, 2229394 + ... + 2229427.

It is an arithmetic number, because the mean of its divisors is an integer number (20064699).

Almost surely, 2^75799957 is an apocalyptic number.

It is an amenable number.

75799957 is a deficient number, since it is larger than the sum of its proper divisors (4458839).

75799957 is a wasteful number, since it uses less digits than its factorization.

75799957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4458838.

The product of its digits is 6251175, while the sum is 58.

The square root of 75799957 is about 8706.3170744006. The cubic root of 75799957 is about 423.2103885163.

The spelling of 75799957 in words is "seventy-five million, seven hundred ninety-nine thousand, nine hundred fifty-seven".