30914561 has 4 divisors (see below), whose sum is σ = 30951492. Its totient is φ = 30877632.

The previous prime is 30914531. The next prime is 30914603. The reversal of 30914561 is 16541903.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 28558336 + 2356225 = 5344^2 + 1535^2 .

It is a cyclic number.

It is not a de Polignac number, because 30914561 - 2⁶ = 30914497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30914531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17180 + ... + 18893.

It is an arithmetic number, because the mean of its divisors is an integer number (7737873).

Almost surely, 2^30914561 is an apocalyptic number.

It is an amenable number.

30914561 is a deficient number, since it is larger than the sum of its proper divisors (36931).

30914561 is an equidigital number, since it uses as much as digits as its factorization.

30914561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36930.

The product of its (nonzero) digits is 3240, while the sum is 29.

The square root of 30914561 is about 5560.0864201917. The cubic root of 30914561 is about 313.8492013947.

The spelling of 30914561 in words is "thirty million, nine hundred fourteen thousand, five hundred sixty-one".