6253421 has 4 divisors (see below), whose sum is σ = 6271200. Its totient is φ = 6235644.

The previous prime is 6253411. The next prime is 6253441. The reversal of 6253421 is 1243526.

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 a de Polignac number, because none of the positive numbers 2^k-6253421 is a prime.

It is a super-5 number, since 5×6253421⁵ (a number of 35 digits) contains 55555 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6253411) 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, 8351 + ... + 9068.

It is an arithmetic number, because the mean of its divisors is an integer number (1567800).

Almost surely, 2^6253421 is an apocalyptic number.

It is an amenable number.

6253421 is a deficient number, since it is larger than the sum of its proper divisors (17779).

6253421 is a wasteful number, since it uses less digits than its factorization.

6253421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17778.

The product of its digits is 1440, while the sum is 23.

The square root of 6253421 is about 2500.6841063997. The cubic root of 6253421 is about 184.2351769933.

Adding to 6253421 its reverse (1243526), we get a palindrome (7496947).

The spelling of 6253421 in words is "six million, two hundred fifty-three thousand, four hundred twenty-one".