53747779 has 2 divisors, whose sum is σ = 53747780. Its totient is φ = 53747778.

The previous prime is 53747767. The next prime is 53747821. The reversal of 53747779 is 97774735.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53747779 - 2⁵ = 53747747 is a prime.

It is not a weakly prime, because it can be changed into another prime (53747719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26873889 + 26873890.

It is an arithmetic number, because the mean of its divisors is an integer number (26873890).

Almost surely, 2^53747779 is an apocalyptic number.

53747779 is a deficient number, since it is larger than the sum of its proper divisors (1).

53747779 is an equidigital number, since it uses as much as digits as its factorization.

53747779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296540, while the sum is 49.

The square root of 53747779 is about 7331.2876768000. The cubic root of 53747779 is about 377.3869175784.

The spelling of 53747779 in words is "fifty-three million, seven hundred forty-seven thousand, seven hundred seventy-nine".