61438337 has 2 divisors, whose sum is σ = 61438338. Its totient is φ = 61438336.

The previous prime is 61438331. The next prime is 61438387. The reversal of 61438337 is 73383416.

It is a happy number.

61438337 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., 38551681 + 22886656 = 6209^2 + 4784^2 .

It is a cyclic number.

It is not a de Polignac number, because 61438337 - 2¹⁴ = 61421953 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61438297 and 61438306.

It is not a weakly prime, because it can be changed into another prime (61438331) 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, 30719168 + 30719169.

It is an arithmetic number, because the mean of its divisors is an integer number (30719169).

Almost surely, 2^61438337 is an apocalyptic number.

It is an amenable number.

61438337 is a deficient number, since it is larger than the sum of its proper divisors (1).

61438337 is an equidigital number, since it uses as much as digits as its factorization.

61438337 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 36288, while the sum is 35.

The square root of 61438337 is about 7838.2610954216. The cubic root of 61438337 is about 394.5903716952.

The spelling of 61438337 in words is "sixty-one million, four hundred thirty-eight thousand, three hundred thirty-seven".