54263621 has 2 divisors, whose sum is σ = 54263622. Its totient is φ = 54263620.

The previous prime is 54263597. The next prime is 54263681. The reversal of 54263621 is 12636245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48455521 + 5808100 = 6961^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 54263621 - 2²² = 50069317 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 (54263681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27131810 + 27131811.

It is an arithmetic number, because the mean of its divisors is an integer number (27131811).

Almost surely, 2^54263621 is an apocalyptic number.

It is an amenable number.

54263621 is a deficient number, since it is larger than the sum of its proper divisors (1).

54263621 is an equidigital number, since it uses as much as digits as its factorization.

54263621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8640, while the sum is 29.

The square root of 54263621 is about 7366.3845270255. The cubic root of 54263621 is about 378.5903938896.

Adding to 54263621 its reverse (12636245), we get a palindrome (66899866).

The spelling of 54263621 in words is "fifty-four million, two hundred sixty-three thousand, six hundred twenty-one".