4951421 has 2 divisors, whose sum is σ = 4951422. Its totient is φ = 4951420.

The previous prime is 4951409. The next prime is 4951439. The reversal of 4951421 is 1241594.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4687225 + 264196 = 2165^2 + 514^2 .

It is a cyclic number.

It is not a de Polignac number, because 4951421 - 2⁶ = 4951357 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4951021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2475710 + 2475711.

It is an arithmetic number, because the mean of its divisors is an integer number (2475711).

Almost surely, 2^4951421 is an apocalyptic number.

It is an amenable number.

4951421 is a deficient number, since it is larger than the sum of its proper divisors (1).

4951421 is an equidigital number, since it uses as much as digits as its factorization.

4951421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1440, while the sum is 26.

The square root of 4951421 is about 2225.1788692148. The cubic root of 4951421 is about 170.4419986002.

The spelling of 4951421 in words is "four million, nine hundred fifty-one thousand, four hundred twenty-one".