2415855 has 24 divisors (see below), whose sum is σ = 4189968. Its totient is φ = 1188096.

The previous prime is 2415839. The next prime is 2415859. The reversal of 2415855 is 5585142.

It is not a de Polignac number, because 2415855 - 2⁴ = 2415839 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 (2415859) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2059 + ... + 3011.

It is an arithmetic number, because the mean of its divisors is an integer number (174582).

2^2415855 is an apocalyptic number.

2415855 is a deficient number, since it is larger than the sum of its proper divisors (1774113).

2415855 is a wasteful number, since it uses less digits than its factorization.

2415855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987 (or 974 counting only the distinct ones).

The product of its digits is 8000, while the sum is 30.

The square root of 2415855 is about 1554.3020941889. The cubic root of 2415855 is about 134.1807725782.

The spelling of 2415855 in words is "two million, four hundred fifteen thousand, eight hundred fifty-five".