61072733 has 2 divisors, whose sum is σ = 61072734. Its totient is φ = 61072732.

The previous prime is 61072703. The next prime is 61072741. The reversal of 61072733 is 33727016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58323769 + 2748964 = 7637^2 + 1658^2 .

It is a cyclic number.

It is not a de Polignac number, because 61072733 - 2²² = 56878429 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61072696 and 61072705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61072703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30536366 + 30536367.

It is an arithmetic number, because the mean of its divisors is an integer number (30536367).

Almost surely, 2^61072733 is an apocalyptic number.

It is an amenable number.

61072733 is a deficient number, since it is larger than the sum of its proper divisors (1).

61072733 is an equidigital number, since it uses as much as digits as its factorization.

61072733 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5292, while the sum is 29.

The square root of 61072733 is about 7814.9045419634. The cubic root of 61072733 is about 393.8061114962.

Adding to 61072733 its reverse (33727016), we get a palindrome (94799749).

The spelling of 61072733 in words is "sixty-one million, seventy-two thousand, seven hundred thirty-three".