49987501 has 2 divisors, whose sum is σ = 49987502. Its totient is φ = 49987500.

The previous prime is 49987477. The next prime is 49987517. The reversal of 49987501 is 10578994.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49984900 + 2601 = 7070^2 + 51^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49987501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49988501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24993750 + 24993751.

It is an arithmetic number, because the mean of its divisors is an integer number (24993751).

Almost surely, 2^49987501 is an apocalyptic number.

It is an amenable number.

49987501 is a deficient number, since it is larger than the sum of its proper divisors (1).

49987501 is an equidigital number, since it uses as much as digits as its factorization.

49987501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 49987501 is about 7070.1839438589. The cubic root of 49987501 is about 368.3724494993.

The spelling of 49987501 in words is "forty-nine million, nine hundred eighty-seven thousand, five hundred one".