61290013 has 2 divisors, whose sum is σ = 61290014. Its totient is φ = 61290012.

The previous prime is 61290011. The next prime is 61290037. The reversal of 61290013 is 31009216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44863204 + 16426809 = 6698^2 + 4053^2 .

It is a cyclic number.

It is not a de Polignac number, because 61290013 - 2¹ = 61290011 is a prime.

Together with 61290011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61290011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30645006 + 30645007.

It is an arithmetic number, because the mean of its divisors is an integer number (30645007).

Almost surely, 2^61290013 is an apocalyptic number.

It is an amenable number.

61290013 is a deficient number, since it is larger than the sum of its proper divisors (1).

61290013 is an equidigital number, since it uses as much as digits as its factorization.

61290013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 61290013 is about 7828.7938406884. The cubic root of 61290013 is about 394.2725767207.

Adding to 61290013 its reverse (31009216), we get a palindrome (92299229).

The spelling of 61290013 in words is "sixty-one million, two hundred ninety thousand, thirteen".