61202137 has 2 divisors, whose sum is σ = 61202138. Its totient is φ = 61202136.

The previous prime is 61202129. The next prime is 61202143. The reversal of 61202137 is 73120216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54997056 + 6205081 = 7416^2 + 2491^2 .

It is a cyclic number.

It is not a de Polignac number, because 61202137 - 2³ = 61202129 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (61202837) 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, 30601068 + 30601069.

It is an arithmetic number, because the mean of its divisors is an integer number (30601069).

Almost surely, 2^61202137 is an apocalyptic number.

It is an amenable number.

61202137 is a deficient number, since it is larger than the sum of its proper divisors (1).

61202137 is an equidigital number, since it uses as much as digits as its factorization.

61202137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 61202137 is about 7823.1794687326. The cubic root of 61202137 is about 394.0840540606.

The spelling of 61202137 in words is "sixty-one million, two hundred two thousand, one hundred thirty-seven".