61031473 has 2 divisors, whose sum is σ = 61031474. Its totient is φ = 61031472.

The previous prime is 61031471. The next prime is 61031519. The reversal of 61031473 is 37413016.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53479969 + 7551504 = 7313^2 + 2748^2 .

It is a cyclic number.

It is not a de Polignac number, because 61031473 - 2¹ = 61031471 is a prime.

Together with 61031471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61031471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30515736 + 30515737.

It is an arithmetic number, because the mean of its divisors is an integer number (30515737).

Almost surely, 2^61031473 is an apocalyptic number.

It is an amenable number.

61031473 is a deficient number, since it is larger than the sum of its proper divisors (1).

61031473 is an equidigital number, since it uses as much as digits as its factorization.

61031473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 61031473 is about 7812.2642684436. The cubic root of 61031473 is about 393.7174079683.

Adding to 61031473 its reverse (37413016), we get a palindrome (98444489).

It can be divided in two parts, 61031 and 473, that added together give a square (61504 = 248²).

The spelling of 61031473 in words is "sixty-one million, thirty-one thousand, four hundred seventy-three".