54939149 has 2 divisors, whose sum is σ = 54939150. Its totient is φ = 54939148.

The previous prime is 54939133. The next prime is 54939197. The reversal of 54939149 is 94193945.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31561924 + 23377225 = 5618^2 + 4835^2 .

It is a cyclic number.

It is not a de Polignac number, because 54939149 - 2⁴ = 54939133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (54939109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27469574 + 27469575.

It is an arithmetic number, because the mean of its divisors is an integer number (27469575).

Almost surely, 2^54939149 is an apocalyptic number.

It is an amenable number.

54939149 is a deficient number, since it is larger than the sum of its proper divisors (1).

54939149 is an equidigital number, since it uses as much as digits as its factorization.

54939149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 174960, while the sum is 44.

The square root of 54939149 is about 7412.0947781312. The cubic root of 54939149 is about 380.1549437388.

The spelling of 54939149 in words is "fifty-four million, nine hundred thirty-nine thousand, one hundred forty-nine".