61830253 has 2 divisors, whose sum is σ = 61830254. Its totient is φ = 61830252.

The previous prime is 61830227. The next prime is 61830299. The reversal of 61830253 is 35203816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53553124 + 8277129 = 7318^2 + 2877^2 .

It is a cyclic number.

It is not a de Polignac number, because 61830253 - 2²¹ = 59733101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61830203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30915126 + 30915127.

It is an arithmetic number, because the mean of its divisors is an integer number (30915127).

Almost surely, 2^61830253 is an apocalyptic number.

It is an amenable number.

61830253 is a deficient number, since it is larger than the sum of its proper divisors (1).

61830253 is an equidigital number, since it uses as much as digits as its factorization.

61830253 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 61830253 is about 7863.2215408190. The cubic root of 61830253 is about 395.4276264008.

The spelling of 61830253 in words is "sixty-one million, eight hundred thirty thousand, two hundred fifty-three".