49786621 has 2 divisors, whose sum is σ = 49786622. Its totient is φ = 49786620.

The previous prime is 49786613. The next prime is 49786673. The reversal of 49786621 is 12668794.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43099225 + 6687396 = 6565^2 + 2586^2 .

It is a cyclic number.

It is not a de Polignac number, because 49786621 - 2³ = 49786613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49786601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24893310 + 24893311.

It is an arithmetic number, because the mean of its divisors is an integer number (24893311).

Almost surely, 2^49786621 is an apocalyptic number.

It is an amenable number.

49786621 is a deficient number, since it is larger than the sum of its proper divisors (1).

49786621 is an equidigital number, since it uses as much as digits as its factorization.

49786621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 49786621 is about 7055.9635061415. The cubic root of 49786621 is about 367.8783392927.

The spelling of 49786621 in words is "forty-nine million, seven hundred eighty-six thousand, six hundred twenty-one".