2515406 has 8 divisors (see below), whose sum is σ = 3837240. Its totient is φ = 1236328.

The previous prime is 2515397. The next prime is 2515411. The reversal of 2515406 is 6045152.

2515406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10541 + ... + 10776.

It is an arithmetic number, because the mean of its divisors is an integer number (479655).

2^2515406 is an apocalyptic number.

2515406 is a deficient number, since it is larger than the sum of its proper divisors (1321834).

2515406 is a wasteful number, since it uses less digits than its factorization.

2515406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21378.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 2515406 is about 1586.0031525820. The cubic root of 2515406 is about 135.9990988983. Note that the first 3 decimals are identical.

The spelling of 2515406 in words is "two million, five hundred fifteen thousand, four hundred six".