61451573 has 2 divisors, whose sum is σ = 61451574. Its totient is φ = 61451572.

The previous prime is 61451557. The next prime is 61451629. The reversal of 61451573 is 37515416.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 31618129 + 29833444 = 5623^2 + 5462^2 .

It is a cyclic number.

It is not a de Polignac number, because 61451573 - 2⁴ = 61451557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61451543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30725786 + 30725787.

It is an arithmetic number, because the mean of its divisors is an integer number (30725787).

Almost surely, 2^61451573 is an apocalyptic number.

It is an amenable number.

61451573 is a deficient number, since it is larger than the sum of its proper divisors (1).

61451573 is an equidigital number, since it uses as much as digits as its factorization.

61451573 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 61451573 is about 7839.1053698748. The cubic root of 61451573 is about 394.6187059211.

Adding to 61451573 its reverse (37515416), we get a palindrome (98966989).

The spelling of 61451573 in words is "sixty-one million, four hundred fifty-one thousand, five hundred seventy-three".