61026913 has 2 divisors, whose sum is σ = 61026914. Its totient is φ = 61026912.

The previous prime is 61026869. The next prime is 61026971. The reversal of 61026913 is 31962016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40297104 + 20729809 = 6348^2 + 4553^2 .

It is a cyclic number.

It is not a de Polignac number, because 61026913 - 2⁹ = 61026401 is a prime.

It is a super-2 number, since 2×61026913² = 7448568220619138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61026013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30513456 + 30513457.

It is an arithmetic number, because the mean of its divisors is an integer number (30513457).

Almost surely, 2^61026913 is an apocalyptic number.

It is an amenable number.

61026913 is a deficient number, since it is larger than the sum of its proper divisors (1).

61026913 is an equidigital number, since it uses as much as digits as its factorization.

61026913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 61026913 is about 7811.9724141858. The cubic root of 61026913 is about 393.7076021200.

Adding to 61026913 its reverse (31962016), we get a palindrome (92988929).

The spelling of 61026913 in words is "sixty-one million, twenty-six thousand, nine hundred thirteen".