61603273 has 2 divisors, whose sum is σ = 61603274. Its totient is φ = 61603272.

The previous prime is 61603247. The next prime is 61603277. The reversal of 61603273 is 37230616.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60419529 + 1183744 = 7773^2 + 1088^2 .

It is a cyclic number.

It is not a de Polignac number, because 61603273 - 2²⁵ = 28048841 is a prime.

It is not a weakly prime, because it can be changed into another prime (61603277) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30801636 + 30801637.

It is an arithmetic number, because the mean of its divisors is an integer number (30801637).

Almost surely, 2^61603273 is an apocalyptic number.

It is an amenable number.

61603273 is a deficient number, since it is larger than the sum of its proper divisors (1).

61603273 is an equidigital number, since it uses as much as digits as its factorization.

61603273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 61603273 is about 7848.7752547770. The cubic root of 61603273 is about 394.9431590484.

Adding to 61603273 its reverse (37230616), we get a palindrome (98833889).

The spelling of 61603273 in words is "sixty-one million, six hundred three thousand, two hundred seventy-three".