61758953 has 2 divisors, whose sum is σ = 61758954. Its totient is φ = 61758952.

The previous prime is 61758929. The next prime is 61758967. The reversal of 61758953 is 35985716.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36638809 + 25120144 = 6053^2 + 5012^2 .

It is a cyclic number.

It is not a de Polignac number, because 61758953 - 2¹² = 61754857 is a prime.

It is not a weakly prime, because it can be changed into another prime (61758923) 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, 30879476 + 30879477.

It is an arithmetic number, because the mean of its divisors is an integer number (30879477).

Almost surely, 2^61758953 is an apocalyptic number.

It is an amenable number.

61758953 is a deficient number, since it is larger than the sum of its proper divisors (1).

61758953 is an equidigital number, since it uses as much as digits as its factorization.

61758953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The square root of 61758953 is about 7858.6864678520. The cubic root of 61758953 is about 395.2755712029.

The spelling of 61758953 in words is "sixty-one million, seven hundred fifty-eight thousand, nine hundred fifty-three".