2555398 has 4 divisors (see below), whose sum is σ = 3833100. Its totient is φ = 1277698.

The previous prime is 2555363. The next prime is 2555429. The reversal of 2555398 is 8935552.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 638848 + ... + 638851.

It is an arithmetic number, because the mean of its divisors is an integer number (958275).

2^2555398 is an apocalyptic number.

2555398 is a deficient number, since it is larger than the sum of its proper divisors (1277702).

2555398 is a wasteful number, since it uses less digits than its factorization.

2555398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1277701.

The product of its digits is 54000, while the sum is 37.

The square root of 2555398 is about 1598.5612281048. The cubic root of 2555398 is about 136.7160545939.

It can be divided in two parts, 25553 and 98, that added together give a triangular number (25651 = T₂₂₆).

The spelling of 2555398 in words is "two million, five hundred fifty-five thousand, three hundred ninety-eight".