49217569 has 4 divisors (see below), whose sum is σ = 49247044. Its totient is φ = 49188096.

The previous prime is 49217561. The next prime is 49217579. The reversal of 49217569 is 96571294.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 96571294 = 2 ⋅48285647.

It can be written as a sum of positive squares in 2 ways, for example, as 9363600 + 39853969 = 3060^2 + 6313^2 .

It is a cyclic number.

It is not a de Polignac number, because 49217569 - 2³ = 49217561 is a prime.

It is a super-2 number, since 2×49217569² = 4844738196539522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49217561) 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, 12072 + ... + 15625.

It is an arithmetic number, because the mean of its divisors is an integer number (12311761).

Almost surely, 2^49217569 is an apocalyptic number.

It is an amenable number.

49217569 is a deficient number, since it is larger than the sum of its proper divisors (29475).

49217569 is a wasteful number, since it uses less digits than its factorization.

49217569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29474.

The product of its digits is 136080, while the sum is 43.

The square root of 49217569 is about 7015.5234302224. The cubic root of 49217569 is about 366.4713710222.

The spelling of 49217569 in words is "forty-nine million, two hundred seventeen thousand, five hundred sixty-nine".