61415573 has 2 divisors, whose sum is σ = 61415574. Its totient is φ = 61415572.

The previous prime is 61415527. The next prime is 61415603. The reversal of 61415573 is 37551416.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59336209 + 2079364 = 7703^2 + 1442^2 .

It is a cyclic number.

It is not a de Polignac number, because 61415573 - 2²⁰ = 60366997 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61415273) 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, 30707786 + 30707787.

It is an arithmetic number, because the mean of its divisors is an integer number (30707787).

Almost surely, 2^61415573 is an apocalyptic number.

It is an amenable number.

61415573 is a deficient number, since it is larger than the sum of its proper divisors (1).

61415573 is an equidigital number, since it uses as much as digits as its factorization.

61415573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12600, while the sum is 32.

The square root of 61415573 is about 7836.8088530983. The cubic root of 61415573 is about 394.5416314174.

Adding to 61415573 its reverse (37551416), we get a palindrome (98966989).

The spelling of 61415573 in words is "sixty-one million, four hundred fifteen thousand, five hundred seventy-three".