53653979 has 2 divisors, whose sum is σ = 53653980. Its totient is φ = 53653978.

The previous prime is 53653961. The next prime is 53653991. The reversal of 53653979 is 97935635.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 53653979 - 2¹⁶ = 53588443 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (53653079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26826989 + 26826990.

It is an arithmetic number, because the mean of its divisors is an integer number (26826990).

Almost surely, 2^53653979 is an apocalyptic number.

53653979 is a deficient number, since it is larger than the sum of its proper divisors (1).

53653979 is an equidigital number, since it uses as much as digits as its factorization.

53653979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 765450, while the sum is 47.

The square root of 53653979 is about 7324.8876441895. The cubic root of 53653979 is about 377.1672526539.

The spelling of 53653979 in words is "fifty-three million, six hundred fifty-three thousand, nine hundred seventy-nine".