54143569 has 2 divisors, whose sum is σ = 54143570. Its totient is φ = 54143568.

The previous prime is 54143567. The next prime is 54143591. The reversal of 54143569 is 96534145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52751169 + 1392400 = 7263^2 + 1180^2 .

It is a cyclic number.

It is not a de Polignac number, because 54143569 - 2¹ = 54143567 is a prime.

It is a super-2 number, since 2×54143569² = 5863052128115522, which contains 22 as substring.

Together with 54143567, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (54143567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27071784 + 27071785.

It is an arithmetic number, because the mean of its divisors is an integer number (27071785).

Almost surely, 2^54143569 is an apocalyptic number.

It is an amenable number.

54143569 is a deficient number, since it is larger than the sum of its proper divisors (1).

54143569 is an equidigital number, since it uses as much as digits as its factorization.

54143569 is an evil number, because the sum of its binary digits is even.

The product of its digits is 64800, while the sum is 37.

The square root of 54143569 is about 7358.2313771721. The cubic root of 54143569 is about 378.3109918863.

The spelling of 54143569 in words is "fifty-four million, one hundred forty-three thousand, five hundred sixty-nine".