2278951 has 4 divisors (see below), whose sum is σ = 2282904. Its totient is φ = 2275000.

The previous prime is 2278949. The next prime is 2278961. The reversal of 2278951 is 1598722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1598722 = 2 ⋅799361.

It is a cyclic number.

It is not a de Polignac number, because 2278951 - 2¹ = 2278949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2278961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 925 + ... + 2326.

It is an arithmetic number, because the mean of its divisors is an integer number (570726).

2^2278951 is an apocalyptic number.

2278951 is a deficient number, since it is larger than the sum of its proper divisors (3953).

2278951 is an equidigital number, since it uses as much as digits as its factorization.

2278951 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3952.

The product of its digits is 10080, while the sum is 34.

The square root of 2278951 is about 1509.6194884805. The cubic root of 2278951 is about 131.5966991039.

The spelling of 2278951 in words is "two million, two hundred seventy-eight thousand, nine hundred fifty-one".