53977447 has 2 divisors, whose sum is σ = 53977448. Its totient is φ = 53977446.

The previous prime is 53977421. The next prime is 53977457. The reversal of 53977447 is 74477935.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53977447 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 53977397 and 53977406.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (53977457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26988723 + 26988724.

It is an arithmetic number, because the mean of its divisors is an integer number (26988724).

Almost surely, 2^53977447 is an apocalyptic number.

53977447 is a deficient number, since it is larger than the sum of its proper divisors (1).

53977447 is an equidigital number, since it uses as much as digits as its factorization.

53977447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 740880, while the sum is 46.

The square root of 53977447 is about 7346.9345308094. The cubic root of 53977447 is about 377.9236872718.

The spelling of 53977447 in words is "fifty-three million, nine hundred seventy-seven thousand, four hundred forty-seven".