30533197 has 2 divisors, whose sum is σ = 30533198. Its totient is φ = 30533196.
The previous prime is 30533183. The next prime is 30533219. The reversal of 30533197 is 79133503.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 17816841 + 12716356 = 4221^2 + 3566^2 .
It is a cyclic number.
It is not a de Polignac number, because 30533197 - 223 = 22144589 is a prime.
It is a super-2 number, since 2×305331972 = 1864552238081618, which contains 22 as substring.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (30533117) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15266598 + 15266599.
It is an arithmetic number, because the mean of its divisors is an integer number (15266599).
Almost surely, 230533197 is an apocalyptic number.
It is an amenable number.
30533197 is a deficient number, since it is larger than the sum of its proper divisors (1).
30533197 is an equidigital number, since it uses as much as digits as its factorization.
30533197 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 8505, while the sum is 31.
The square root of 30533197 is about 5525.6852063794. The cubic root of 30533197 is about 312.5533033342.
The spelling of 30533197 in words is "thirty million, five hundred thirty-three thousand, one hundred ninety-seven".
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