30855541 has 2 divisors, whose sum is σ = 30855542. Its totient is φ = 30855540.

The previous prime is 30855533. The next prime is 30855589. The reversal of 30855541 is 14555803.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23726641 + 7128900 = 4871^2 + 2670^2 .

It is a cyclic number.

It is not a de Polignac number, because 30855541 - 2³ = 30855533 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30850541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15427770 + 15427771.

It is an arithmetic number, because the mean of its divisors is an integer number (15427771).

Almost surely, 2^30855541 is an apocalyptic number.

It is an amenable number.

30855541 is a deficient number, since it is larger than the sum of its proper divisors (1).

30855541 is an equidigital number, since it uses as much as digits as its factorization.

30855541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12000, while the sum is 31.

The square root of 30855541 is about 5554.7764131421. The cubic root of 30855541 is about 313.6493475648.

The spelling of 30855541 in words is "thirty million, eight hundred fifty-five thousand, five hundred forty-one".