7253138 has 4 divisors (see below), whose sum is σ = 10879710. Its totient is φ = 3626568.

The previous prime is 7253137. The next prime is 7253167. The reversal of 7253138 is 8313527.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6165289 + 1087849 = 2483^2 + 1043^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7253138.

It is not an unprimeable number, because it can be changed into a prime (7253137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1813283 + ... + 1813286.

Almost surely, 2^7253138 is an apocalyptic number.

7253138 is a deficient number, since it is larger than the sum of its proper divisors (3626572).

7253138 is a wasteful number, since it uses less digits than its factorization.

7253138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3626571.

The product of its digits is 5040, while the sum is 29.

The square root of 7253138 is about 2693.1650524986. The cubic root of 7253138 is about 193.5717517069.

It can be divided in two parts, 72 and 53138, that multiplied together give a square (3825936 = 1956²).

The spelling of 7253138 in words is "seven million, two hundred fifty-three thousand, one hundred thirty-eight".