2750421 has 16 divisors (see below), whose sum is σ = 3919040. Its totient is φ = 1710720.

The previous prime is 2750401. The next prime is 2750431. The reversal of 2750421 is 1240572.

It is not a de Polignac number, because 2750421 - 2⁶ = 2750357 is a prime.

It is a Duffinian number.

2750421 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2750401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3831 + ... + 4491.

It is an arithmetic number, because the mean of its divisors is an integer number (244940).

2^2750421 is an apocalyptic number.

It is an amenable number.

2750421 is a deficient number, since it is larger than the sum of its proper divisors (1168619).

2750421 is a wasteful number, since it uses less digits than its factorization.

2750421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 756.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 2750421 is about 1658.4393265959. The cubic root of 2750421 is about 140.1091156138.

Adding to 2750421 its reverse (1240572), we get a palindrome (3990993).

The spelling of 2750421 in words is "two million, seven hundred fifty thousand, four hundred twenty-one".