54221429 has 2 divisors, whose sum is σ = 54221430. Its totient is φ = 54221428.

The previous prime is 54221411. The next prime is 54221471. The reversal of 54221429 is 92412245.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50438404 + 3783025 = 7102^2 + 1945^2 .

It is a cyclic number.

It is not a de Polignac number, because 54221429 - 2¹² = 54217333 is a prime.

It is equal to p_3238562 and since 54221429 and 3238562 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54221029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27110714 + 27110715.

It is an arithmetic number, because the mean of its divisors is an integer number (27110715).

Almost surely, 2^54221429 is an apocalyptic number.

It is an amenable number.

54221429 is a deficient number, since it is larger than the sum of its proper divisors (1).

54221429 is an equidigital number, since it uses as much as digits as its factorization.

54221429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5760, while the sum is 29.

The square root of 54221429 is about 7363.5201500369. The cubic root of 54221429 is about 378.4922457049.

The spelling of 54221429 in words is "fifty-four million, two hundred twenty-one thousand, four hundred twenty-nine".