49110821 has 2 divisors, whose sum is σ = 49110822. Its totient is φ = 49110820.

The previous prime is 49110811. The next prime is 49110827. The reversal of 49110821 is 12801194.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 44742721 + 4368100 = 6689^2 + 2090^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49110821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49110827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24555410 + 24555411.

It is an arithmetic number, because the mean of its divisors is an integer number (24555411).

Almost surely, 2^49110821 is an apocalyptic number.

It is an amenable number.

49110821 is a deficient number, since it is larger than the sum of its proper divisors (1).

49110821 is an equidigital number, since it uses as much as digits as its factorization.

49110821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 26.

The square root of 49110821 is about 7007.9113150781. The cubic root of 49110821 is about 366.2062326217.

The spelling of 49110821 in words is "forty-nine million, one hundred ten thousand, eight hundred twenty-one".