75152138 has 12 divisors (see below), whose sum is σ = 119750262. Its totient is φ = 35365440.

The previous prime is 75152093. The next prime is 75152149. The reversal of 75152138 is 83125157.

It can be written as a sum of positive squares in 3 ways, for example, as 62141689 + 13010449 = 7883^2 + 3607^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64433 + ... + 65588.

Almost surely, 2^75152138 is an apocalyptic number.

75152138 is a deficient number, since it is larger than the sum of its proper divisors (44598124).

75152138 is a wasteful number, since it uses less digits than its factorization.

75152138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130057 (or 130040 counting only the distinct ones).

The product of its digits is 8400, while the sum is 32.

The square root of 75152138 is about 8669.0332794378. The cubic root of 75152138 is about 422.0012915214.

The spelling of 75152138 in words is "seventy-five million, one hundred fifty-two thousand, one hundred thirty-eight".