61388953 has 2 divisors, whose sum is σ = 61388954. Its totient is φ = 61388952.

The previous prime is 61388941. The next prime is 61388983. The reversal of 61388953 is 35988316.

61388953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35856144 + 25532809 = 5988^2 + 5053^2 .

It is a cyclic number.

It is not a de Polignac number, because 61388953 - 2⁹ = 61388441 is a prime.

It is not a weakly prime, because it can be changed into another prime (61388903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30694476 + 30694477.

It is an arithmetic number, because the mean of its divisors is an integer number (30694477).

Almost surely, 2^61388953 is an apocalyptic number.

It is an amenable number.

61388953 is a deficient number, since it is larger than the sum of its proper divisors (1).

61388953 is an equidigital number, since it uses as much as digits as its factorization.

61388953 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 155520, while the sum is 43.

The square root of 61388953 is about 7835.1102736337. The cubic root of 61388953 is about 394.4846197318.

The spelling of 61388953 in words is "sixty-one million, three hundred eighty-eight thousand, nine hundred fifty-three".