61225949 has 2 divisors, whose sum is σ = 61225950. Its totient is φ = 61225948.

The previous prime is 61225943. The next prime is 61225951. The reversal of 61225949 is 94952216.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57684025 + 3541924 = 7595^2 + 1882^2 .

It is a cyclic number.

It is not a de Polignac number, because 61225949 - 2⁸ = 61225693 is a prime.

Together with 61225951, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61225943) 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, 30612974 + 30612975.

It is an arithmetic number, because the mean of its divisors is an integer number (30612975).

Almost surely, 2^61225949 is an apocalyptic number.

It is an amenable number.

61225949 is a deficient number, since it is larger than the sum of its proper divisors (1).

61225949 is an equidigital number, since it uses as much as digits as its factorization.

61225949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 38880, while the sum is 38.

The square root of 61225949 is about 7824.7012083529. The cubic root of 61225949 is about 394.1351563762.

The spelling of 61225949 in words is "sixty-one million, two hundred twenty-five thousand, nine hundred forty-nine".