49031665 has 4 divisors (see below), whose sum is σ = 58838004. Its totient is φ = 39225328.

The previous prime is 49031651. The next prime is 49031681. The reversal of 49031665 is 56613094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6155361 + 42876304 = 2481^2 + 6548^2 .

It is a cyclic number.

It is not a de Polignac number, because 49031665 - 2¹³ = 49023473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 49031665.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4903162 + ... + 4903171.

It is an arithmetic number, because the mean of its divisors is an integer number (14709501).

Almost surely, 2^49031665 is an apocalyptic number.

It is an amenable number.

49031665 is a deficient number, since it is larger than the sum of its proper divisors (9806339).

49031665 is an equidigital number, since it uses as much as digits as its factorization.

49031665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9806338.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 49031665 is about 7002.2614204270. The cubic root of 49031665 is about 366.0093784611.

The spelling of 49031665 in words is "forty-nine million, thirty-one thousand, six hundred sixty-five".