61995503 has 2 divisors, whose sum is σ = 61995504. Its totient is φ = 61995502.

The previous prime is 61995497. The next prime is 61995547. The reversal of 61995503 is 30559916.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61995503 - 2²⁴ = 45218287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61995203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30997751 + 30997752.

It is an arithmetic number, because the mean of its divisors is an integer number (30997752).

Almost surely, 2^61995503 is an apocalyptic number.

61995503 is a deficient number, since it is larger than the sum of its proper divisors (1).

61995503 is an equidigital number, since it uses as much as digits as its factorization.

61995503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36450, while the sum is 38.

The square root of 61995503 is about 7873.7223090480. The cubic root of 61995503 is about 395.7795915762.

The spelling of 61995503 in words is "sixty-one million, nine hundred ninety-five thousand, five hundred three".