45175138 has 4 divisors (see below), whose sum is σ = 67762710. Its totient is φ = 22587568.

The previous prime is 45175121. The next prime is 45175181. The reversal of 45175138 is 83157154.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83157154 = 2 ⋅41578577.

It can be written as a sum of positive squares in only one way, i.e., 39400729 + 5774409 = 6277^2 + 2403^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11293783 + ... + 11293786.

Almost surely, 2^45175138 is an apocalyptic number.

45175138 is a deficient number, since it is larger than the sum of its proper divisors (22587572).

45175138 is a wasteful number, since it uses less digits than its factorization.

45175138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22587571.

The product of its digits is 16800, while the sum is 34.

The square root of 45175138 is about 6721.2452715252. The cubic root of 45175138 is about 356.1501754575.

The spelling of 45175138 in words is "forty-five million, one hundred seventy-five thousand, one hundred thirty-eight".