2978225 has 6 divisors (see below), whose sum is σ = 3693030. Its totient is φ = 2382560.

The previous prime is 2978219. The next prime is 2978233. The reversal of 2978225 is 5228792.

It can be written as a sum of positive squares in 3 ways, for example, as 16384 + 2961841 = 128^2 + 1721^2 .

It is not a de Polignac number, because 2978225 - 2⁶ = 2978161 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 59540 + ... + 59589.

It is an arithmetic number, because the mean of its divisors is an integer number (615505).

2^2978225 is an apocalyptic number.

2978225 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

It is an amenable number.

2978225 is a deficient number, since it is larger than the sum of its proper divisors (714805).

2978225 is a wasteful number, since it uses less digits than its factorization.

2978225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119139 (or 119134 counting only the distinct ones).

The product of its digits is 20160, while the sum is 35.

The square root of 2978225 is about 1725.7534586377. The cubic root of 2978225 is about 143.8751650875.

The spelling of 2978225 in words is "two million, nine hundred seventy-eight thousand, two hundred twenty-five".