61202257 has 2 divisors, whose sum is σ = 61202258. Its totient is φ = 61202256.

The previous prime is 61202243. The next prime is 61202279. The reversal of 61202257 is 75220216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36192256 + 25010001 = 6016^2 + 5001^2 .

It is a cyclic number.

It is not a de Polignac number, because 61202257 - 2⁷ = 61202129 is a prime.

It is not a weakly prime, because it can be changed into another prime (61202657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30601128 + 30601129.

It is an arithmetic number, because the mean of its divisors is an integer number (30601129).

Almost surely, 2^61202257 is an apocalyptic number.

It is an amenable number.

61202257 is a deficient number, since it is larger than the sum of its proper divisors (1).

61202257 is an equidigital number, since it uses as much as digits as its factorization.

61202257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 61202257 is about 7823.1871382449. The cubic root of 61202257 is about 394.0843116228.

The spelling of 61202257 in words is "sixty-one million, two hundred two thousand, two hundred fifty-seven".