54139357 has 2 divisors, whose sum is σ = 54139358. Its totient is φ = 54139356.

The previous prime is 54139331. The next prime is 54139367. The reversal of 54139357 is 75393145.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47692836 + 6446521 = 6906^2 + 2539^2 .

It is a cyclic number.

It is not a de Polignac number, because 54139357 - 2¹¹ = 54137309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54139367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27069678 + 27069679.

It is an arithmetic number, because the mean of its divisors is an integer number (27069679).

Almost surely, 2^54139357 is an apocalyptic number.

It is an amenable number.

54139357 is a deficient number, since it is larger than the sum of its proper divisors (1).

54139357 is an equidigital number, since it uses as much as digits as its factorization.

54139357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 56700, while the sum is 37.

The square root of 54139357 is about 7357.9451615244. The cubic root of 54139357 is about 378.3011816278.

The spelling of 54139357 in words is "fifty-four million, one hundred thirty-nine thousand, three hundred fifty-seven".