49971973 has 2 divisors, whose sum is σ = 49971974. Its totient is φ = 49971972.

The previous prime is 49971953. The next prime is 49971979. The reversal of 49971973 is 37917994.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46881409 + 3090564 = 6847^2 + 1758^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49971973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49971979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24985986 + 24985987.

It is an arithmetic number, because the mean of its divisors is an integer number (24985987).

Almost surely, 2^49971973 is an apocalyptic number.

It is an amenable number.

49971973 is a deficient number, since it is larger than the sum of its proper divisors (1).

49971973 is an equidigital number, since it uses as much as digits as its factorization.

49971973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 428652, while the sum is 49.

The square root of 49971973 is about 7069.0857258913. The cubic root of 49971973 is about 368.3343020979.

The spelling of 49971973 in words is "forty-nine million, nine hundred seventy-one thousand, nine hundred seventy-three".