49987771 has 2 divisors, whose sum is σ = 49987772. Its totient is φ = 49987770.

The previous prime is 49987759. The next prime is 49987781. The reversal of 49987771 is 17778994.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49987771 - 2⁵ = 49987739 is a prime.

It is not a weakly prime, because it can be changed into another prime (49987711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24993885 + 24993886.

It is an arithmetic number, because the mean of its divisors is an integer number (24993886).

Almost surely, 2^49987771 is an apocalyptic number.

49987771 is a deficient number, since it is larger than the sum of its proper divisors (1).

49987771 is an equidigital number, since it uses as much as digits as its factorization.

49987771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 889056, while the sum is 52.

The square root of 49987771 is about 7070.2030381029. The cubic root of 49987771 is about 368.3731127343.

It can be divided in two parts, 4998 and 7771, that added together give a square (12769 = 113²).

The spelling of 49987771 in words is "forty-nine million, nine hundred eighty-seven thousand, seven hundred seventy-one".