2570138 has 4 divisors (see below), whose sum is σ = 3855210. Its totient is φ = 1285068.

The previous prime is 2570137. The next prime is 2570177. The reversal of 2570138 is 8310752.

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., 2569609 + 529 = 1603^2 + 23^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2570137) 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 as a sum of consecutive naturals, namely, 642533 + ... + 642536.

2^2570138 is an apocalyptic number.

2570138 is a deficient number, since it is larger than the sum of its proper divisors (1285072).

2570138 is a wasteful number, since it uses less digits than its factorization.

2570138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1285071.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2570138 is about 1603.1649946278. The cubic root of 2570138 is about 136.9784184663.

The spelling of 2570138 in words is "two million, five hundred seventy thousand, one hundred thirty-eight".