61825871 has 2 divisors, whose sum is σ = 61825872. Its totient is φ = 61825870.

The previous prime is 61825859. The next prime is 61825913. The reversal of 61825871 is 17852816.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61825871 - 2⁶ = 61825807 is a prime.

It is equal to p_3663884 and since 61825871 and 3663884 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61825801) 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, 30912935 + 30912936.

It is an arithmetic number, because the mean of its divisors is an integer number (30912936).

Almost surely, 2^61825871 is an apocalyptic number.

61825871 is a deficient number, since it is larger than the sum of its proper divisors (1).

61825871 is an equidigital number, since it uses as much as digits as its factorization.

61825871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26880, while the sum is 38.

The square root of 61825871 is about 7862.9428969057. The cubic root of 61825871 is about 395.4182846697.

The spelling of 61825871 in words is "sixty-one million, eight hundred twenty-five thousand, eight hundred seventy-one".