30541957 has 2 divisors, whose sum is σ = 30541958. Its totient is φ = 30541956.

The previous prime is 30541943. The next prime is 30541961. The reversal of 30541957 is 75914503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30481441 + 60516 = 5521^2 + 246^2 .

It is a cyclic number.

It is not a de Polignac number, because 30541957 - 2¹¹ = 30539909 is a prime.

It is a super-2 number, since 2×30541957² = 1865622274779698, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30541967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15270978 + 15270979.

It is an arithmetic number, because the mean of its divisors is an integer number (15270979).

Almost surely, 2^30541957 is an apocalyptic number.

It is an amenable number.

30541957 is a deficient number, since it is larger than the sum of its proper divisors (1).

30541957 is an equidigital number, since it uses as much as digits as its factorization.

30541957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18900, while the sum is 34.

The square root of 30541957 is about 5526.4778114094. The cubic root of 30541957 is about 312.5831910783.

The spelling of 30541957 in words is "thirty million, five hundred forty-one thousand, nine hundred fifty-seven".