49802772557 has 2 divisors, whose sum is σ = 49802772558. Its totient is φ = 49802772556.

The previous prime is 49802772527. The next prime is 49802772601. The reversal of 49802772557 is 75527720894.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33309535081 + 16493237476 = 182509^2 + 128426^2 .

It is a cyclic number.

It is not a de Polignac number, because 49802772557 - 2²⁶ = 49735663693 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49802772527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24901386278 + 24901386279.

It is an arithmetic number, because the mean of its divisors is an integer number (24901386279).

Almost surely, 2^49802772557 is an apocalyptic number.

It is an amenable number.

49802772557 is a deficient number, since it is larger than the sum of its proper divisors (1).

49802772557 is an equidigital number, since it uses as much as digits as its factorization.

49802772557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9878400, while the sum is 56.

The spelling of 49802772557 in words is "forty-nine billion, eight hundred two million, seven hundred seventy-two thousand, five hundred fifty-seven".