2251420 has 12 divisors (see below), whose sum is σ = 4728024. Its totient is φ = 900560.

The previous prime is 2251411. The next prime is 2251423. The reversal of 2251420 is 241522.

It is a junction number, because it is equal to n+sod(n) for n = 2251394 and 2251403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251423) 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, 56266 + ... + 56305.

It is an arithmetic number, because the mean of its divisors is an integer number (394002).

2^2251420 is an apocalyptic number.

2251420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251420 is an abundant number, since it is smaller than the sum of its proper divisors (2476604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251420 is a wasteful number, since it uses less digits than its factorization.

2251420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112580 (or 112578 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 2251420 is about 1500.4732586754. The cubic root of 2251420 is about 131.0646302302.

Adding to 2251420 its reverse (241522), we get a palindrome (2492942).

The spelling of 2251420 in words is "two million, two hundred fifty-one thousand, four hundred twenty".