54039917 has 2 divisors, whose sum is σ = 54039918. Its totient is φ = 54039916.

The previous prime is 54039899. The next prime is 54039919. The reversal of 54039917 is 71993045.

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., 40119556 + 13920361 = 6334^2 + 3731^2 .

It is a cyclic number.

It is not a de Polignac number, because 54039917 - 2¹⁴ = 54023533 is a prime.

Together with 54039919, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54039919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27019958 + 27019959.

It is an arithmetic number, because the mean of its divisors is an integer number (27019959).

Almost surely, 2^54039917 is an apocalyptic number.

It is an amenable number.

54039917 is a deficient number, since it is larger than the sum of its proper divisors (1).

54039917 is an equidigital number, since it uses as much as digits as its factorization.

54039917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 54039917 is about 7351.1847344493. The cubic root of 54039917 is about 378.0694258602.

The spelling of 54039917 in words is "fifty-four million, thirty-nine thousand, nine hundred seventeen".