49871551 has 2 divisors, whose sum is σ = 49871552. Its totient is φ = 49871550.

The previous prime is 49871527. The next prime is 49871573. The reversal of 49871551 is 15517894.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49871551 - 2⁵ = 49871519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49871501) 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, 24935775 + 24935776.

It is an arithmetic number, because the mean of its divisors is an integer number (24935776).

Almost surely, 2^49871551 is an apocalyptic number.

49871551 is a deficient number, since it is larger than the sum of its proper divisors (1).

49871551 is an equidigital number, since it uses as much as digits as its factorization.

49871551 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50400, while the sum is 40.

The square root of 49871551 is about 7061.9792551380. The cubic root of 49871551 is about 368.0874058882.

The spelling of 49871551 in words is "forty-nine million, eight hundred seventy-one thousand, five hundred fifty-one".