53549939 has 2 divisors, whose sum is σ = 53549940. Its totient is φ = 53549938.

The previous prime is 53549929. The next prime is 53549963. The reversal of 53549939 is 93994535.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 53549939 - 2²⁰ = 52501363 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 53549893 and 53549902.

It is not a weakly prime, because it can be changed into another prime (53549929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26774969 + 26774970.

It is an arithmetic number, because the mean of its divisors is an integer number (26774970).

Almost surely, 2^53549939 is an apocalyptic number.

53549939 is a deficient number, since it is larger than the sum of its proper divisors (1).

53549939 is an equidigital number, since it uses as much as digits as its factorization.

53549939 is an evil number, because the sum of its binary digits is even.

The product of its digits is 656100, while the sum is 47.

The square root of 53549939 is about 7317.7823826621. The cubic root of 53549939 is about 376.9233075779.

The spelling of 53549939 in words is "fifty-three million, five hundred forty-nine thousand, nine hundred thirty-nine".