61325501 has 2 divisors, whose sum is σ = 61325502. Its totient is φ = 61325500.

The previous prime is 61325497. The next prime is 61325503. The reversal of 61325501 is 10552316.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55517401 + 5808100 = 7451^2 + 2410^2 .

It is a cyclic number.

It is not a de Polignac number, because 61325501 - 2² = 61325497 is a prime.

It is a Sophie Germain prime.

Together with 61325503, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p_3636050 and since 61325501 and 3636050 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 (61325503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30662750 + 30662751.

It is an arithmetic number, because the mean of its divisors is an integer number (30662751).

Almost surely, 2^61325501 is an apocalyptic number.

It is an amenable number.

61325501 is a deficient number, since it is larger than the sum of its proper divisors (1).

61325501 is an equidigital number, since it uses as much as digits as its factorization.

61325501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 61325501 is about 7831.0600176477. The cubic root of 61325501 is about 394.3486589667.

Adding to 61325501 its reverse (10552316), we get a palindrome (71877817).

The spelling of 61325501 in words is "sixty-one million, three hundred twenty-five thousand, five hundred one".