54323021 has 2 divisors, whose sum is σ = 54323022. Its totient is φ = 54323020.

The previous prime is 54322979. The next prime is 54323051. The reversal of 54323021 is 12032345.

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., 51122500 + 3200521 = 7150^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 54323021 - 2¹⁰ = 54321997 is a prime.

It is a super-2 number, since 2×54323021² = 5901981221132882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 54322984 and 54323002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54323051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27161510 + 27161511.

It is an arithmetic number, because the mean of its divisors is an integer number (27161511).

Almost surely, 2^54323021 is an apocalyptic number.

It is an amenable number.

54323021 is a deficient number, since it is larger than the sum of its proper divisors (1).

54323021 is an equidigital number, since it uses as much as digits as its factorization.

54323021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 54323021 is about 7370.4152528877. The cubic root of 54323021 is about 378.7284856002.

Adding to 54323021 its reverse (12032345), we get a palindrome (66355366).

The spelling of 54323021 in words is "fifty-four million, three hundred twenty-three thousand, twenty-one".