53784553 has 2 divisors, whose sum is σ = 53784554. Its totient is φ = 53784552.

The previous prime is 53784551. The next prime is 53784571. The reversal of 53784553 is 35548735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53772889 + 11664 = 7333^2 + 108^2 .

It is a cyclic number.

It is not a de Polignac number, because 53784553 - 2¹ = 53784551 is a prime.

Together with 53784551, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (53784551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26892276 + 26892277.

It is an arithmetic number, because the mean of its divisors is an integer number (26892277).

Almost surely, 2^53784553 is an apocalyptic number.

It is an amenable number.

53784553 is a deficient number, since it is larger than the sum of its proper divisors (1).

53784553 is an equidigital number, since it uses as much as digits as its factorization.

53784553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 252000, while the sum is 40.

The square root of 53784553 is about 7333.7952657543. The cubic root of 53784553 is about 377.4729667936.

The spelling of 53784553 in words is "fifty-three million, seven hundred eighty-four thousand, five hundred fifty-three".