49711861 has 2 divisors, whose sum is σ = 49711862. Its totient is φ = 49711860.

The previous prime is 49711843. The next prime is 49711919. The reversal of 49711861 is 16811794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48566961 + 1144900 = 6969^2 + 1070^2 .

It is a cyclic number.

It is not a de Polignac number, because 49711861 - 2¹⁹ = 49187573 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 49711861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49711561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24855930 + 24855931.

It is an arithmetic number, because the mean of its divisors is an integer number (24855931).

Almost surely, 2^49711861 is an apocalyptic number.

It is an amenable number.

49711861 is a deficient number, since it is larger than the sum of its proper divisors (1).

49711861 is an equidigital number, since it uses as much as digits as its factorization.

49711861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 37.

The square root of 49711861 is about 7050.6638694523. The cubic root of 49711861 is about 367.6941106678.

The spelling of 49711861 in words is "forty-nine million, seven hundred eleven thousand, eight hundred sixty-one".