61183217 has 2 divisors, whose sum is σ = 61183218. Its totient is φ = 61183216.

The previous prime is 61183189. The next prime is 61183229. The reversal of 61183217 is 71238116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40398736 + 20784481 = 6356^2 + 4559^2 .

It is a cyclic number.

It is not a de Polignac number, because 61183217 - 2¹⁶ = 61117681 is a prime.

It is equal to p_3628154 and since 61183217 and 3628154 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61183217.

It is not a weakly prime, because it can be changed into another prime (61183277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30591608 + 30591609.

It is an arithmetic number, because the mean of its divisors is an integer number (30591609).

Almost surely, 2^61183217 is an apocalyptic number.

It is an amenable number.

61183217 is a deficient number, since it is larger than the sum of its proper divisors (1).

61183217 is an equidigital number, since it uses as much as digits as its factorization.

61183217 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 61183217 is about 7821.9701482427. The cubic root of 61183217 is about 394.0434408886.

The spelling of 61183217 in words is "sixty-one million, one hundred eighty-three thousand, two hundred seventeen".