49798657 has 4 divisors (see below), whose sum is σ = 51963840. Its totient is φ = 47633476.

The previous prime is 49798643. The next prime is 49798663. The reversal of 49798657 is 75689794.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75689794 = 2 ⋅37844897.

It is a cyclic number.

It is not a de Polignac number, because 49798657 - 2¹¹ = 49796609 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 49798598 and 49798607.

It is not an unprimeable number, because it can be changed into a prime (49798607) 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, 1082557 + ... + 1082602.

It is an arithmetic number, because the mean of its divisors is an integer number (12990960).

Almost surely, 2^49798657 is an apocalyptic number.

It is an amenable number.

49798657 is a deficient number, since it is larger than the sum of its proper divisors (2165183).

49798657 is a wasteful number, since it uses less digits than its factorization.

49798657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2165182.

The product of its digits is 3810240, while the sum is 55.

The square root of 49798657 is about 7056.8163501681. The cubic root of 49798657 is about 367.9079819748.

The spelling of 49798657 in words is "forty-nine million, seven hundred ninety-eight thousand, six hundred fifty-seven".