53624665 has 4 divisors (see below), whose sum is σ = 64349604. Its totient is φ = 42899728.

The previous prime is 53624663. The next prime is 53624693. The reversal of 53624665 is 56642635.

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 36252441 + 17372224 = 6021^2 + 4168^2 .

It is a cyclic number.

It is not a de Polignac number, because 53624665 - 2¹ = 53624663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53624663) 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, 5362462 + ... + 5362471.

It is an arithmetic number, because the mean of its divisors is an integer number (16087401).

Almost surely, 2^53624665 is an apocalyptic number.

It is an amenable number.

53624665 is a deficient number, since it is larger than the sum of its proper divisors (10724939).

53624665 is a wasteful number, since it uses less digits than its factorization.

53624665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10724938.

The product of its digits is 129600, while the sum is 37.

The square root of 53624665 is about 7322.8863844798. The cubic root of 53624665 is about 377.0985513497.

It can be divided in two parts, 53624 and 665, that added together give a square (54289 = 233²).

The spelling of 53624665 in words is "fifty-three million, six hundred twenty-four thousand, six hundred sixty-five".