61413173 has 2 divisors, whose sum is σ = 61413174. Its totient is φ = 61413172.

The previous prime is 61413137. The next prime is 61413199. The reversal of 61413173 is 37131416.

Together with previous prime (61413137) it forms an Ormiston pair, because they use the same digits, order apart.

It is an a-pointer prime, because the next prime (61413199) can be obtained adding 61413173 to its sum of digits (26).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60109009 + 1304164 = 7753^2 + 1142^2 .

It is a cyclic number.

It is not a de Polignac number, because 61413173 - 2¹² = 61409077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61413103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30706586 + 30706587.

It is an arithmetic number, because the mean of its divisors is an integer number (30706587).

Almost surely, 2^61413173 is an apocalyptic number.

It is an amenable number.

61413173 is a deficient number, since it is larger than the sum of its proper divisors (1).

61413173 is an equidigital number, since it uses as much as digits as its factorization.

61413173 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1512, while the sum is 26.

The square root of 61413173 is about 7836.6557280513. The cubic root of 61413173 is about 394.5364920464.

Adding to 61413173 its reverse (37131416), we get a palindrome (98544589).

The spelling of 61413173 in words is "sixty-one million, four hundred thirteen thousand, one hundred seventy-three".