2515138 has 4 divisors (see below), whose sum is σ = 3772710. Its totient is φ = 1257568.

The previous prime is 2515127. The next prime is 2515147. The reversal of 2515138 is 8315152.

It is a happy number.

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., 1580049 + 935089 = 1257^2 + 967^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 628783 + ... + 628786.

2^2515138 is an apocalyptic number.

2515138 is a deficient number, since it is larger than the sum of its proper divisors (1257572).

2515138 is a wasteful number, since it uses less digits than its factorization.

2515138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1257571.

The product of its digits is 1200, while the sum is 25.

The square root of 2515138 is about 1585.9186612182. The cubic root of 2515138 is about 135.9942687896.

The spelling of 2515138 in words is "two million, five hundred fifteen thousand, one hundred thirty-eight".