61845533 has 2 divisors, whose sum is σ = 61845534. Its totient is φ = 61845532.

The previous prime is 61845529. The next prime is 61845583. The reversal of 61845533 is 33554816.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42016324 + 19829209 = 6482^2 + 4453^2 .

It is a cyclic number.

It is not a de Polignac number, because 61845533 - 2² = 61845529 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 61845493 and 61845502.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (61845503) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30922766 + 30922767.

It is an arithmetic number, because the mean of its divisors is an integer number (30922767).

Almost surely, 2^61845533 is an apocalyptic number.

It is an amenable number.

61845533 is a deficient number, since it is larger than the sum of its proper divisors (1).

61845533 is an equidigital number, since it uses as much as digits as its factorization.

61845533 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43200, while the sum is 35.

The square root of 61845533 is about 7864.1930927464. The cubic root of 61845533 is about 395.4601974923.

The spelling of 61845533 in words is "sixty-one million, eight hundred forty-five thousand, five hundred thirty-three".