53576645 has 4 divisors (see below), whose sum is σ = 64291980. Its totient is φ = 42861312.

The previous prime is 53576641. The next prime is 53576651. The reversal of 53576645 is 54667535.

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 9247681 + 44328964 = 3041^2 + 6658^2 .

It is a cyclic number.

It is not a de Polignac number, because 53576645 - 2² = 53576641 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53576641) 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, 5357660 + ... + 5357669.

It is an arithmetic number, because the mean of its divisors is an integer number (16072995).

Almost surely, 2^53576645 is an apocalyptic number.

It is an amenable number.

53576645 is a deficient number, since it is larger than the sum of its proper divisors (10715335).

53576645 is a wasteful number, since it uses less digits than its factorization.

53576645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10715334.

The product of its digits is 378000, while the sum is 41.

The square root of 53576645 is about 7319.6068883513. The cubic root of 53576645 is about 376.9859558967.

The spelling of 53576645 in words is "fifty-three million, five hundred seventy-six thousand, six hundred forty-five".