49943565 has 24 divisors (see below), whose sum is σ = 98936448. Its totient is φ = 22831200.

The previous prime is 49943549. The next prime is 49943587. The reversal of 49943565 is 56534994.

49943565 is a `hidden beast` number, since 49 + 9 + 43 + 565 = 666.

It is not a de Polignac number, because 49943565 - 2⁴ = 49943549 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 49943565.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78961 + ... + 79590.

It is an arithmetic number, because the mean of its divisors is an integer number (4122352).

Almost surely, 2^49943565 is an apocalyptic number.

49943565 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49943565 is a deficient number, since it is larger than the sum of its proper divisors (48992883).

49943565 is a wasteful number, since it uses less digits than its factorization.

49943565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158569 (or 158566 counting only the distinct ones).

The product of its digits is 583200, while the sum is 45.

The square root of 49943565 is about 7067.0761280745. The cubic root of 49943565 is about 368.2644921382.

It can be divided in two parts, 499435 and 65, that added together give a triangular number (499500 = T₉₉₉).

The spelling of 49943565 in words is "forty-nine million, nine hundred forty-three thousand, five hundred sixty-five".