30686053 has 2 divisors, whose sum is σ = 30686054. Its totient is φ = 30686052.

The previous prime is 30686041. The next prime is 30686093. The reversal of 30686053 is 35068603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28323684 + 2362369 = 5322^2 + 1537^2 .

It is a cyclic number.

It is not a de Polignac number, because 30686053 - 2⁵ = 30686021 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30686023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15343026 + 15343027.

It is an arithmetic number, because the mean of its divisors is an integer number (15343027).

Almost surely, 2^30686053 is an apocalyptic number.

It is an amenable number.

30686053 is a deficient number, since it is larger than the sum of its proper divisors (1).

30686053 is an equidigital number, since it uses as much as digits as its factorization.

30686053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 30686053 is about 5539.4993456088. The cubic root of 30686053 is about 313.0740059162.

The spelling of 30686053 in words is "thirty million, six hundred eighty-six thousand, fifty-three".