53358661 has 4 divisors (see below), whose sum is σ = 53848300. Its totient is φ = 52869024.

The previous prime is 53358649. The next prime is 53358673. The reversal of 53358661 is 16685335.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (53358649) and next prime (53358673).

It can be written as a sum of positive squares in 2 ways, for example, as 17430625 + 35928036 = 4175^2 + 5994^2 .

It is a cyclic number.

It is not a de Polignac number, because 53358661 - 2⁵ = 53358629 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 53358661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53358611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 244656 + ... + 244873.

It is an arithmetic number, because the mean of its divisors is an integer number (13462075).

Almost surely, 2^53358661 is an apocalyptic number.

It is an amenable number.

53358661 is a deficient number, since it is larger than the sum of its proper divisors (489639).

53358661 is a wasteful number, since it uses less digits than its factorization.

53358661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489638.

The product of its digits is 64800, while the sum is 37.

The square root of 53358661 is about 7304.7012943720. The cubic root of 53358661 is about 376.4739877398.

The spelling of 53358661 in words is "fifty-three million, three hundred fifty-eight thousand, six hundred sixty-one".