61115459 has 4 divisors (see below), whose sum is σ = 64710504. Its totient is φ = 57520416.

The previous prime is 61115447. The next prime is 61115471. The reversal of 61115459 is 95451116.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (61115447) and next prime (61115471).

It is a cyclic number.

It is not a de Polignac number, because 61115459 - 2⁴ = 61115443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61115429) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1797497 + ... + 1797530.

It is an arithmetic number, because the mean of its divisors is an integer number (16177626).

Almost surely, 2^61115459 is an apocalyptic number.

61115459 is a deficient number, since it is larger than the sum of its proper divisors (3595045).

61115459 is a wasteful number, since it uses less digits than its factorization.

61115459 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3595044.

The product of its digits is 5400, while the sum is 32.

The square root of 61115459 is about 7817.6376866672. The cubic root of 61115459 is about 393.8979246338.

It can be divided in two parts, 611 and 15459, that multiplied together give a palindrome (9445449).

The spelling of 61115459 in words is "sixty-one million, one hundred fifteen thousand, four hundred fifty-nine".