61198253 has 2 divisors, whose sum is σ = 61198254. Its totient is φ = 61198252.

The previous prime is 61198243. The next prime is 61198273. The reversal of 61198253 is 35289116.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59567524 + 1630729 = 7718^2 + 1277^2 .

It is a cyclic number.

It is not a de Polignac number, because 61198253 - 2²² = 57003949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61198213) 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, 30599126 + 30599127.

It is an arithmetic number, because the mean of its divisors is an integer number (30599127).

Almost surely, 2^61198253 is an apocalyptic number.

It is an amenable number.

61198253 is a deficient number, since it is larger than the sum of its proper divisors (1).

61198253 is an equidigital number, since it uses as much as digits as its factorization.

61198253 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12960, while the sum is 35.

The square root of 61198253 is about 7822.9312281267. The cubic root of 61198253 is about 394.0757174517.

The spelling of 61198253 in words is "sixty-one million, one hundred ninety-eight thousand, two hundred fifty-three".