49311961 has 2 divisors, whose sum is σ = 49311962. Its totient is φ = 49311960.

The previous prime is 49311959. The next prime is 49311967. The reversal of 49311961 is 16911394.

It is a happy number.

49311961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48734361 + 577600 = 6981^2 + 760^2 .

It is a cyclic number.

It is not a de Polignac number, because 49311961 - 2¹ = 49311959 is a prime.

Together with 49311959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (49311967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24655980 + 24655981.

It is an arithmetic number, because the mean of its divisors is an integer number (24655981).

Almost surely, 2^49311961 is an apocalyptic number.

It is an amenable number.

49311961 is a deficient number, since it is larger than the sum of its proper divisors (1).

49311961 is an equidigital number, since it uses as much as digits as its factorization.

49311961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5832, while the sum is 34.

The square root of 49311961 is about 7022.2475746729. The cubic root of 49311961 is about 366.7055006619.

The spelling of 49311961 in words is "forty-nine million, three hundred eleven thousand, nine hundred sixty-one".