61161263 has 2 divisors, whose sum is σ = 61161264. Its totient is φ = 61161262.

The previous prime is 61161253. The next prime is 61161271. The reversal of 61161263 is 36216116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61161263 - 2¹⁸ = 60899119 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61161253) 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, 30580631 + 30580632.

It is an arithmetic number, because the mean of its divisors is an integer number (30580632).

Almost surely, 2^61161263 is an apocalyptic number.

61161263 is a deficient number, since it is larger than the sum of its proper divisors (1).

61161263 is an equidigital number, since it uses as much as digits as its factorization.

61161263 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1296, while the sum is 26.

The square root of 61161263 is about 7820.5666674481. The cubic root of 61161263 is about 393.9963045167.

Adding to 61161263 its reverse (36216116), we get a palindrome (97377379).

The spelling of 61161263 in words is "sixty-one million, one hundred sixty-one thousand, two hundred sixty-three".