61775503 has 2 divisors, whose sum is σ = 61775504. Its totient is φ = 61775502.

The previous prime is 61775453. The next prime is 61775509. The reversal of 61775503 is 30557716.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 61775503 - 2¹³ = 61767311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61775509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30887751 + 30887752.

It is an arithmetic number, because the mean of its divisors is an integer number (30887752).

Almost surely, 2^61775503 is an apocalyptic number.

61775503 is a deficient number, since it is larger than the sum of its proper divisors (1).

61775503 is an equidigital number, since it uses as much as digits as its factorization.

61775503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22050, while the sum is 34.

The square root of 61775503 is about 7859.7393722693. The cubic root of 61775503 is about 395.3108763482.

The spelling of 61775503 in words is "sixty-one million, seven hundred seventy-five thousand, five hundred three".