49656661 has 4 divisors (see below), whose sum is σ = 49691500. Its totient is φ = 49621824.

The previous prime is 49656653. The next prime is 49656679. The reversal of 49656661 is 16665694.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16665694 = 2 ⋅8332847.

It can be written as a sum of positive squares in 2 ways, for example, as 32558436 + 17098225 = 5706^2 + 4135^2 .

It is a cyclic number.

It is not a de Polignac number, because 49656661 - 2³ = 49656653 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49656631) 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, 15186 + ... + 18163.

It is an arithmetic number, because the mean of its divisors is an integer number (12422875).

Almost surely, 2^49656661 is an apocalyptic number.

It is an amenable number.

49656661 is a deficient number, since it is larger than the sum of its proper divisors (34839).

49656661 is a wasteful number, since it uses less digits than its factorization.

49656661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34838.

The product of its digits is 233280, while the sum is 43.

The square root of 49656661 is about 7046.7482571751. The cubic root of 49656661 is about 367.5579645408.

The spelling of 49656661 in words is "forty-nine million, six hundred fifty-six thousand, six hundred sixty-one".