7550138 has 8 divisors (see below), whose sum is σ = 11337300. Its totient is φ = 3771040.

The previous prime is 7550131. The next prime is 7550149. The reversal of 7550138 is 8310557.

It can be written as a sum of positive squares in 2 ways, for example, as 7198489 + 351649 = 2683^2 + 593^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 7550138.

It is not an unprimeable number, because it can be changed into a prime (7550131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1688 + ... + 4236.

Almost surely, 2^7550138 is an apocalyptic number.

7550138 is a deficient number, since it is larger than the sum of its proper divisors (3787162).

7550138 is a wasteful number, since it uses less digits than its factorization.

7550138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4032.

The product of its (nonzero) digits is 4200, while the sum is 29.

The square root of 7550138 is about 2747.7514443632. The cubic root of 7550138 is about 196.1785995280.

The spelling of 7550138 in words is "seven million, five hundred fifty thousand, one hundred thirty-eight".