49866613 has 2 divisors, whose sum is σ = 49866614. Its totient is φ = 49866612.

The previous prime is 49866547. The next prime is 49866643. The reversal of 49866613 is 31666894.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 47858724 + 2007889 = 6918^2 + 1417^2 .

It is a cyclic number.

It is not a de Polignac number, because 49866613 - 2²¹ = 47769461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49866613.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49866643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24933306 + 24933307.

It is an arithmetic number, because the mean of its divisors is an integer number (24933307).

Almost surely, 2^49866613 is an apocalyptic number.

It is an amenable number.

49866613 is a deficient number, since it is larger than the sum of its proper divisors (1).

49866613 is an equidigital number, since it uses as much as digits as its factorization.

49866613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 43.

The square root of 49866613 is about 7061.6296277842. The cubic root of 49866613 is about 368.0752568402.

The spelling of 49866613 in words is "forty-nine million, eight hundred sixty-six thousand, six hundred thirteen".