54369421 has 2 divisors, whose sum is σ = 54369422. Its totient is φ = 54369420.

The previous prime is 54369397. The next prime is 54369437. The reversal of 54369421 is 12496345.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54022500 + 346921 = 7350^2 + 589^2 .

It is a cyclic number.

It is not a de Polignac number, because 54369421 - 2¹⁹ = 53845133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54369481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27184710 + 27184711.

It is an arithmetic number, because the mean of its divisors is an integer number (27184711).

Almost surely, 2^54369421 is an apocalyptic number.

It is an amenable number.

54369421 is a deficient number, since it is larger than the sum of its proper divisors (1).

54369421 is an equidigital number, since it uses as much as digits as its factorization.

54369421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 34.

The square root of 54369421 is about 7373.5623005437. The cubic root of 54369421 is about 378.8362852062.

The spelling of 54369421 in words is "fifty-four million, three hundred sixty-nine thousand, four hundred twenty-one".