53690549 has 4 divisors (see below), whose sum is σ = 58571520. Its totient is φ = 48809580.

The previous prime is 53690521. The next prime is 53690569. The reversal of 53690549 is 94509635.

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 53690549 - 2²⁰ = 52641973 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 (53690519) 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, 2440469 + ... + 2440490.

It is an arithmetic number, because the mean of its divisors is an integer number (14642880).

Almost surely, 2^53690549 is an apocalyptic number.

It is an amenable number.

53690549 is a deficient number, since it is larger than the sum of its proper divisors (4880971).

53690549 is a wasteful number, since it uses less digits than its factorization.

53690549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4880970.

The product of its (nonzero) digits is 145800, while the sum is 41.

The square root of 53690549 is about 7327.3835029975. The cubic root of 53690549 is about 377.2529242987.

The spelling of 53690549 in words is "fifty-three million, six hundred ninety thousand, five hundred forty-nine".