75145556 has 12 divisors (see below), whose sum is σ = 131971392. Its totient is φ = 37439448.

The previous prime is 75145549. The next prime is 75145571. The reversal of 75145556 is 65554157.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32060 + ... + 34323.

It is an arithmetic number, because the mean of its divisors is an integer number (10997616).

Almost surely, 2^75145556 is an apocalyptic number.

It is an amenable number.

75145556 is a deficient number, since it is larger than the sum of its proper divisors (56825836).

75145556 is a wasteful number, since it uses less digits than its factorization.

75145556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66670 (or 66668 counting only the distinct ones).

The product of its digits is 105000, while the sum is 38.

The square root of 75145556 is about 8668.6536440211. The cubic root of 75145556 is about 421.9889712084.

The spelling of 75145556 in words is "seventy-five million, one hundred forty-five thousand, five hundred fifty-six".