30197477 has 2 divisors, whose sum is σ = 30197478. Its totient is φ = 30197476.

The previous prime is 30197473. The next prime is 30197521. The reversal of 30197477 is 77479103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27050401 + 3147076 = 5201^2 + 1774^2 .

It is a cyclic number.

It is not a de Polignac number, because 30197477 - 2² = 30197473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30197477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30197471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15098738 + 15098739.

It is an arithmetic number, because the mean of its divisors is an integer number (15098739).

Almost surely, 2^30197477 is an apocalyptic number.

It is an amenable number.

30197477 is a deficient number, since it is larger than the sum of its proper divisors (1).

30197477 is an equidigital number, since it uses as much as digits as its factorization.

30197477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 37044, while the sum is 38.

The square root of 30197477 is about 5495.2231073906. The cubic root of 30197477 is about 311.4035455800.

The spelling of 30197477 in words is "thirty million, one hundred ninety-seven thousand, four hundred seventy-seven".