30561149 has 8 divisors (see below), whose sum is σ = 31593048. Its totient is φ = 29540160.

The previous prime is 30561143. The next prime is 30561151. The reversal of 30561149 is 94116503.

It can be written as a sum of positive squares in 4 ways, for example, as 10936249 + 19624900 = 3307^2 + 4430^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30561149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30561143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3179 + ... + 8439.

It is an arithmetic number, because the mean of its divisors is an integer number (3949131).

Almost surely, 2^30561149 is an apocalyptic number.

It is an amenable number.

30561149 is a deficient number, since it is larger than the sum of its proper divisors (1031899).

30561149 is a wasteful number, since it uses less digits than its factorization.

30561149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5455.

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

The square root of 30561149 is about 5528.2139068600. The cubic root of 30561149 is about 312.6486511978.

The spelling of 30561149 in words is "thirty million, five hundred sixty-one thousand, one hundred forty-nine".