54220139 has 2 divisors, whose sum is σ = 54220140. Its totient is φ = 54220138.

The previous prime is 54220087. The next prime is 54220141. The reversal of 54220139 is 93102245.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 54220139 - 2¹⁶ = 54154603 is a prime.

Together with 54220141, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (54220189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27110069 + 27110070.

It is an arithmetic number, because the mean of its divisors is an integer number (27110070).

Almost surely, 2^54220139 is an apocalyptic number.

54220139 is a deficient number, since it is larger than the sum of its proper divisors (1).

54220139 is an equidigital number, since it uses as much as digits as its factorization.

54220139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 54220139 is about 7363.4325555409. The cubic root of 54220139 is about 378.4892440696.

The spelling of 54220139 in words is "fifty-four million, two hundred twenty thousand, one hundred thirty-nine".