215164553 has 2 divisors, whose sum is σ = 215164554. Its totient is φ = 215164552.

The previous prime is 215164541. The next prime is 215164589. The reversal of 215164553 is 355461512.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 167236624 + 47927929 = 12932^2 + 6923^2 .

It is a cyclic number.

It is not a de Polignac number, because 215164553 - 2⁶ = 215164489 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (215164753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107582276 + 107582277.

It is an arithmetic number, because the mean of its divisors is an integer number (107582277).

Almost surely, 2^215164553 is an apocalyptic number.

It is an amenable number.

215164553 is a deficient number, since it is larger than the sum of its proper divisors (1).

215164553 is an equidigital number, since it uses as much as digits as its factorization.

215164553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18000, while the sum is 32.

The square root of 215164553 is about 14668.4884361000. The cubic root of 215164553 is about 599.2254384840.

The spelling of 215164553 in words is "two hundred fifteen million, one hundred sixty-four thousand, five hundred fifty-three".