49361621 has 2 divisors, whose sum is σ = 49361622. Its totient is φ = 49361620.

The previous prime is 49361597. The next prime is 49361623. The reversal of 49361621 is 12616394.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36300625 + 13060996 = 6025^2 + 3614^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49361621 is a prime.

It is a Sophie Germain prime.

Together with 49361623, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49361623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24680810 + 24680811.

It is an arithmetic number, because the mean of its divisors is an integer number (24680811).

Almost surely, 2^49361621 is an apocalyptic number.

It is an amenable number.

49361621 is a deficient number, since it is larger than the sum of its proper divisors (1).

49361621 is an equidigital number, since it uses as much as digits as its factorization.

49361621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 32.

The square root of 49361621 is about 7025.7825898614. The cubic root of 49361621 is about 366.8285572535.

The spelling of 49361621 in words is "forty-nine million, three hundred sixty-one thousand, six hundred twenty-one".