53961549 has 4 divisors (see below), whose sum is σ = 71948736. Its totient is φ = 35974364.

The previous prime is 53961461. The next prime is 53961559. The reversal of 53961549 is 94516935.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53961549 - 2⁸ = 53961293 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 53961549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53961559) 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, 8993589 + ... + 8993594.

It is an arithmetic number, because the mean of its divisors is an integer number (17987184).

Almost surely, 2^53961549 is an apocalyptic number.

It is an amenable number.

53961549 is a deficient number, since it is larger than the sum of its proper divisors (17987187).

53961549 is a wasteful number, since it uses less digits than its factorization.

53961549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17987186.

The product of its digits is 145800, while the sum is 42.

The square root of 53961549 is about 7345.8525032837. The cubic root of 53961549 is about 377.8865802881.

The spelling of 53961549 in words is "fifty-three million, nine hundred sixty-one thousand, five hundred forty-nine".