54022691 has 2 divisors, whose sum is σ = 54022692. Its totient is φ = 54022690.

The previous prime is 54022687. The next prime is 54022721. The reversal of 54022691 is 19622045.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 54022691 - 2² = 54022687 is a prime.

It is a super-2 number, since 2×54022691² = 5836902285762962, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (54022091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27011345 + 27011346.

It is an arithmetic number, because the mean of its divisors is an integer number (27011346).

Almost surely, 2^54022691 is an apocalyptic number.

54022691 is a deficient number, since it is larger than the sum of its proper divisors (1).

54022691 is an equidigital number, since it uses as much as digits as its factorization.

54022691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 54022691 is about 7350.0129931858. The cubic root of 54022691 is about 378.0292499038.

The spelling of 54022691 in words is "fifty-four million, twenty-two thousand, six hundred ninety-one".