61117603 has 2 divisors, whose sum is σ = 61117604. Its totient is φ = 61117602.

The previous prime is 61117597. The next prime is 61117649. The reversal of 61117603 is 30671116.

It is a happy number.

61117603 is nontrivially palindromic in base 16.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61117603 is a prime.

It is a super-2 number, since 2×61117603² = 7470722792931218, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (61117103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30558801 + 30558802.

It is an arithmetic number, because the mean of its divisors is an integer number (30558802).

Almost surely, 2^61117603 is an apocalyptic number.

61117603 is a deficient number, since it is larger than the sum of its proper divisors (1).

61117603 is an equidigital number, since it uses as much as digits as its factorization.

61117603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 61117603 is about 7817.7748112874. The cubic root of 61117603 is about 393.9025307094.

Adding to 61117603 its reverse (30671116), we get a palindrome (91788719).

The spelling of 61117603 in words is "sixty-one million, one hundred seventeen thousand, six hundred three".