53017949 has 4 divisors (see below), whose sum is σ = 53122620. Its totient is φ = 52913280.

The previous prime is 53017919. The next prime is 53017957. The reversal of 53017949 is 94971035.

It is a happy number.

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 36060025 + 16957924 = 6005^2 + 4118^2 .

It is a cyclic number.

It is not a de Polignac number, because 53017949 - 2⁸ = 53017693 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53017919) 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, 51572 + ... + 52589.

It is an arithmetic number, because the mean of its divisors is an integer number (13280655).

Almost surely, 2^53017949 is an apocalyptic number.

It is an amenable number.

53017949 is a deficient number, since it is larger than the sum of its proper divisors (104671).

53017949 is a wasteful number, since it uses less digits than its factorization.

53017949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104670.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 53017949 is about 7281.3425273091. The cubic root of 53017949 is about 375.6709741412.

The spelling of 53017949 in words is "fifty-three million, seventeen thousand, nine hundred forty-nine".