75551066 has 4 divisors (see below), whose sum is σ = 113326602. Its totient is φ = 37775532.

The previous prime is 75551057. The next prime is 75551083. The reversal of 75551066 is 66015557.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 66015557 = 19 ⋅3474503.

It can be written as a sum of positive squares in only one way, i.e., 41667025 + 33884041 = 6455^2 + 5821^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18887765 + ... + 18887768.

Almost surely, 2^75551066 is an apocalyptic number.

75551066 is a deficient number, since it is larger than the sum of its proper divisors (37775536).

75551066 is a wasteful number, since it uses less digits than its factorization.

75551066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37775535.

The product of its (nonzero) digits is 31500, while the sum is 35.

The square root of 75551066 is about 8692.0116198726. The cubic root of 75551066 is about 422.7466734086.

The spelling of 75551066 in words is "seventy-five million, five hundred fifty-one thousand, sixty-six".