2752421 has 4 divisors (see below), whose sum is σ = 3145632. Its totient is φ = 2359212.

The previous prime is 2752417. The next prime is 2752423. The reversal of 2752421 is 1242572.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2752421 - 2² = 2752417 is a prime.

It is a super-2 number, since 2×2752421² = 15151642722482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2752423) 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, 196595 + ... + 196608.

It is an arithmetic number, because the mean of its divisors is an integer number (786408).

2^2752421 is an apocalyptic number.

It is an amenable number.

2752421 is a deficient number, since it is larger than the sum of its proper divisors (393211).

2752421 is an equidigital number, since it uses as much as digits as its factorization.

2752421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393210.

The product of its digits is 1120, while the sum is 23.

The square root of 2752421 is about 1659.0421935563. The cubic root of 2752421 is about 140.1430680326.

Adding to 2752421 its reverse (1242572), we get a palindrome (3994993).

The spelling of 2752421 in words is "two million, seven hundred fifty-two thousand, four hundred twenty-one".