2543415 has 16 divisors (see below), whose sum is σ = 4651008. Its totient is φ = 1162656.

The previous prime is 2543413. The next prime is 2543423. The reversal of 2543415 is 5143452.

It is not a de Polignac number, because 2543415 - 2¹ = 2543413 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2543413) 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, 12007 + ... + 12216.

It is an arithmetic number, because the mean of its divisors is an integer number (290688).

2^2543415 is an apocalyptic number.

2543415 is a deficient number, since it is larger than the sum of its proper divisors (2107593).

2543415 is a wasteful number, since it uses less digits than its factorization.

2543415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24238.

The product of its digits is 2400, while the sum is 24.

The square root of 2543415 is about 1594.8087659654. The cubic root of 2543415 is about 136.5020193183.

Adding to 2543415 its reverse (5143452), we get a palindrome (7686867).

The spelling of 2543415 in words is "two million, five hundred forty-three thousand, four hundred fifteen".