61297573 has 2 divisors, whose sum is σ = 61297574. Its totient is φ = 61297572.

The previous prime is 61297547. The next prime is 61297679. The reversal of 61297573 is 37579216.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46689889 + 14607684 = 6833^2 + 3822^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61297573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61297073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30648786 + 30648787.

It is an arithmetic number, because the mean of its divisors is an integer number (30648787).

Almost surely, 2^61297573 is an apocalyptic number.

It is an amenable number.

61297573 is a deficient number, since it is larger than the sum of its proper divisors (1).

61297573 is an equidigital number, since it uses as much as digits as its factorization.

61297573 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 79380, while the sum is 40.

The square root of 61297573 is about 7829.2766587981. The cubic root of 61297573 is about 394.2887869643.

The spelling of 61297573 in words is "sixty-one million, two hundred ninety-seven thousand, five hundred seventy-three".