53949613 has 4 divisors (see below), whose sum is σ = 53965180. Its totient is φ = 53934048.

The previous prime is 53949611. The next prime is 53949617. The reversal of 53949613 is 31694935.

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 43204329 + 10745284 = 6573^2 + 3278^2 .

It is a cyclic number.

It is not a de Polignac number, because 53949613 - 2¹ = 53949611 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 (53949611) 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, 31 + ... + 10387.

It is an arithmetic number, because the mean of its divisors is an integer number (13491295).

Almost surely, 2^53949613 is an apocalyptic number.

It is an amenable number.

53949613 is a deficient number, since it is larger than the sum of its proper divisors (15567).

53949613 is a wasteful number, since it uses less digits than its factorization.

53949613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15566.

The product of its digits is 87480, while the sum is 40.

The square root of 53949613 is about 7345.0400271203. The cubic root of 53949613 is about 377.8587160841.

The spelling of 53949613 in words is "fifty-three million, nine hundred forty-nine thousand, six hundred thirteen".