7138515 has 16 divisors (see below), whose sum is σ = 11593728. Its totient is φ = 3749856.

The previous prime is 7138513. The next prime is 7138541. The reversal of 7138515 is 5158317.

It is not a de Polignac number, because 7138515 - 2¹ = 7138513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7138513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2547 + ... + 4556.

It is an arithmetic number, because the mean of its divisors is an integer number (724608).

Almost surely, 2^7138515 is an apocalyptic number.

7138515 is a deficient number, since it is larger than the sum of its proper divisors (4455213).

7138515 is a wasteful number, since it uses less digits than its factorization.

7138515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7178.

The product of its digits is 4200, while the sum is 30.

The square root of 7138515 is about 2671.7999550865. The cubic root of 7138515 is about 192.5466463671.

The spelling of 7138515 in words is "seven million, one hundred thirty-eight thousand, five hundred fifteen".