54953021 has 2 divisors, whose sum is σ = 54953022. Its totient is φ = 54953020.

The previous prime is 54952991. The next prime is 54953033. The reversal of 54953021 is 12035945.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49140100 + 5812921 = 7010^2 + 2411^2 .

It is a cyclic number.

It is not a de Polignac number, because 54953021 - 2¹⁸ = 54690877 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 (54958021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27476510 + 27476511.

It is an arithmetic number, because the mean of its divisors is an integer number (27476511).

Almost surely, 2^54953021 is an apocalyptic number.

It is an amenable number.

54953021 is a deficient number, since it is larger than the sum of its proper divisors (1).

54953021 is an equidigital number, since it uses as much as digits as its factorization.

54953021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 54953021 is about 7413.0304869196. The cubic root of 54953021 is about 380.1869371090.

Adding to 54953021 its reverse (12035945), we get a palindrome (66988966).

The spelling of 54953021 in words is "fifty-four million, nine hundred fifty-three thousand, twenty-one".