54871919 has 2 divisors, whose sum is σ = 54871920. Its totient is φ = 54871918.

The previous prime is 54871909. The next prime is 54871931. The reversal of 54871919 is 91917845.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54871919 - 2¹⁶ = 54806383 is a prime.

It is a super-2 number, since 2×54871919² = 6021854989485122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 54871919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54871909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27435959 + 27435960.

It is an arithmetic number, because the mean of its divisors is an integer number (27435960).

Almost surely, 2^54871919 is an apocalyptic number.

54871919 is a deficient number, since it is larger than the sum of its proper divisors (1).

54871919 is an equidigital number, since it uses as much as digits as its factorization.

54871919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 90720, while the sum is 44.

The square root of 54871919 is about 7407.5582346682. The cubic root of 54871919 is about 379.9998130193. Note that the first 3 decimals are identical.

The spelling of 54871919 in words is "fifty-four million, eight hundred seventy-one thousand, nine hundred nineteen".