49065921 has 6 divisors (see below), whose sum is σ = 70873010. Its totient is φ = 32710608.

The previous prime is 49065911. The next prime is 49065931. The reversal of 49065921 is 12956094.

It is an interprime number because it is at equal distance from previous prime (49065911) and next prime (49065931).

It can be written as a sum of positive squares in only one way, i.e., 39237696 + 9828225 = 6264^2 + 3135^2 .

It is not a de Polignac number, because 49065921 - 2⁹ = 49065409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49065911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2725876 + ... + 2725893.

Almost surely, 2^49065921 is an apocalyptic number.

It is an amenable number.

49065921 is a deficient number, since it is larger than the sum of its proper divisors (21807089).

49065921 is a wasteful number, since it uses less digits than its factorization.

49065921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5451775 (or 5451772 counting only the distinct ones).

The product of its (nonzero) digits is 19440, while the sum is 36.

The square root of 49065921 is about 7004.7070602560. The cubic root of 49065921 is about 366.0945961703.

The spelling of 49065921 in words is "forty-nine million, sixty-five thousand, nine hundred twenty-one".