2457855 has 24 divisors (see below), whose sum is σ = 4297488. Its totient is φ = 1299456.

The previous prime is 2457839. The next prime is 2457869. The reversal of 2457855 is 5587542.

It is a happy number.

It is not a de Polignac number, because 2457855 - 2⁴ = 2457839 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8544 + ... + 8826.

It is an arithmetic number, because the mean of its divisors is an integer number (179062).

2^2457855 is an apocalyptic number.

2457855 is a deficient number, since it is larger than the sum of its proper divisors (1839633).

2457855 is a wasteful number, since it uses less digits than its factorization.

2457855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487 (or 484 counting only the distinct ones).

The product of its digits is 56000, while the sum is 36.

The square root of 2457855 is about 1567.7547639857. The cubic root of 2457855 is about 134.9538937202.

It can be divided in two parts, 245 and 7855, that added together give a square (8100 = 90²).

The spelling of 2457855 in words is "two million, four hundred fifty-seven thousand, eight hundred fifty-five".