61617043 has 2 divisors, whose sum is σ = 61617044. Its totient is φ = 61617042.

The previous prime is 61617041. The next prime is 61617079. The reversal of 61617043 is 34071616.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 61617043 - 2¹ = 61617041 is a prime.

Together with 61617041, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (61617041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30808521 + 30808522.

It is an arithmetic number, because the mean of its divisors is an integer number (30808522).

Almost surely, 2^61617043 is an apocalyptic number.

61617043 is a deficient number, since it is larger than the sum of its proper divisors (1).

61617043 is an equidigital number, since it uses as much as digits as its factorization.

61617043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 61617043 is about 7849.6524126868. The cubic root of 61617043 is about 394.9725836870.

Adding to 61617043 its reverse (34071616), we get a palindrome (95688659).

The spelling of 61617043 in words is "sixty-one million, six hundred seventeen thousand, forty-three".