75557242 has 4 divisors (see below), whose sum is σ = 113335866. Its totient is φ = 37778620.

The previous prime is 75557227. The next prime is 75557249. The reversal of 75557242 is 24275557.

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

It can be written as a sum of positive squares in only one way, i.e., 70408881 + 5148361 = 8391^2 + 2269^2 .

It is not an unprimeable number, because it can be changed into a prime (75557249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18889309 + ... + 18889312.

Almost surely, 2^75557242 is an apocalyptic number.

75557242 is a deficient number, since it is larger than the sum of its proper divisors (37778624).

75557242 is a wasteful number, since it uses less digits than its factorization.

75557242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37778623.

The product of its digits is 98000, while the sum is 37.

The square root of 75557242 is about 8692.3668813506. The cubic root of 75557242 is about 422.7581923827.

The spelling of 75557242 in words is "seventy-five million, five hundred fifty-seven thousand, two hundred forty-two".