54817739 has 2 divisors, whose sum is σ = 54817740. Its totient is φ = 54817738.

The previous prime is 54817729. The next prime is 54817747. The reversal of 54817739 is 93771845.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-54817739 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54817739.

It is not a weakly prime, because it can be changed into another prime (54817729) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27408869 + 27408870.

It is an arithmetic number, because the mean of its divisors is an integer number (27408870).

Almost surely, 2^54817739 is an apocalyptic number.

54817739 is a deficient number, since it is larger than the sum of its proper divisors (1).

54817739 is an equidigital number, since it uses as much as digits as its factorization.

54817739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 211680, while the sum is 44.

The square root of 54817739 is about 7403.9002559462. The cubic root of 54817739 is about 379.8747024574.

The spelling of 54817739 in words is "fifty-four million, eight hundred seventeen thousand, seven hundred thirty-nine".