2572815 has 32 divisors (see below), whose sum is σ = 4769280. Its totient is φ = 1160064.

The previous prime is 2572811. The next prime is 2572859. The reversal of 2572815 is 5182752.

It is a Cunningham number, because it is equal to 1604²-1.

It is not a de Polignac number, because 2572815 - 2² = 2572811 is a prime.

It is an Ulam number.

2572815 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2572811) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11121 + ... + 11349.

It is an arithmetic number, because the mean of its divisors is an integer number (149040).

2^2572815 is an apocalyptic number.

2572815 is a deficient number, since it is larger than the sum of its proper divisors (2196465).

2572815 is a wasteful number, since it uses less digits than its factorization.

2572815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351.

The product of its digits is 5600, while the sum is 30.

The square root of 2572815 is about 1603.9996882793. Note that the first 3 decimals coincide. The cubic root of 2572815 is about 137.0259598807.

The spelling of 2572815 in words is "two million, five hundred seventy-two thousand, eight hundred fifteen".