49791569 has 4 divisors (see below), whose sum is σ = 50027760. Its totient is φ = 49555380.

The previous prime is 49791563. The next prime is 49791583. The reversal of 49791569 is 96519794.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49791569 is a prime.

It is a super-2 number, since 2×49791569² = 4958400686963522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49791563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117779 + ... + 118200.

It is an arithmetic number, because the mean of its divisors is an integer number (12506940).

Almost surely, 2^49791569 is an apocalyptic number.

It is an amenable number.

49791569 is a deficient number, since it is larger than the sum of its proper divisors (236191).

49791569 is a wasteful number, since it uses less digits than its factorization.

49791569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236190.

The product of its digits is 612360, while the sum is 50.

The square root of 49791569 is about 7056.3141228264. The cubic root of 49791569 is about 367.8905259785.

The spelling of 49791569 in words is "forty-nine million, seven hundred ninety-one thousand, five hundred sixty-nine".