49891519 has 2 divisors, whose sum is σ = 49891520. Its totient is φ = 49891518.

The previous prime is 49891453. The next prime is 49891573. The reversal of 49891519 is 91519894.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49891519 - 2¹¹ = 49889471 is a prime.

It is a super-2 number, since 2×49891519² = 4978327336254722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (49891319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24945759 + 24945760.

It is an arithmetic number, because the mean of its divisors is an integer number (24945760).

Almost surely, 2^49891519 is an apocalyptic number.

49891519 is a deficient number, since it is larger than the sum of its proper divisors (1).

49891519 is an equidigital number, since it uses as much as digits as its factorization.

49891519 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 46.

The square root of 49891519 is about 7063.3928816115. The cubic root of 49891519 is about 368.1365253323.

The spelling of 49891519 in words is "forty-nine million, eight hundred ninety-one thousand, five hundred nineteen".