53186645 has 8 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 42520720.

The previous prime is 53186641. The next prime is 53186647. The reversal of 53186645 is 54668135.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53186645 - 2² = 53186641 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 53186599 and 53186608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53186641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8036 + ... + 13074.

It is an arithmetic number, because the mean of its divisors is an integer number (7983360).

Almost surely, 2^53186645 is an apocalyptic number.

It is an amenable number.

53186645 is a deficient number, since it is larger than the sum of its proper divisors (10680235).

53186645 is a wasteful number, since it uses less digits than its factorization.

53186645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7155.

The product of its digits is 86400, while the sum is 38.

The square root of 53186645 is about 7292.9174546268. The cubic root of 53186645 is about 376.0689971653.

The spelling of 53186645 in words is "fifty-three million, one hundred eighty-six thousand, six hundred forty-five".