53041661 has 4 divisors (see below), whose sum is σ = 54275232. Its totient is φ = 51808092.

The previous prime is 53041643. The next prime is 53041663. The reversal of 53041661 is 16614035.

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, and also an emirpimes, since its reverse is a distinct semiprime: 16614035 = 5 ⋅3322807.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-53041661 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 53041661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53041663) 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, 616721 + ... + 616806.

It is an arithmetic number, because the mean of its divisors is an integer number (13568808).

Almost surely, 2^53041661 is an apocalyptic number.

It is an amenable number.

53041661 is a deficient number, since it is larger than the sum of its proper divisors (1233571).

53041661 is a wasteful number, since it uses less digits than its factorization.

53041661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1233570.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 53041661 is about 7282.9706164449. The cubic root of 53041661 is about 375.7269714191.

Adding to 53041661 its reverse (16614035), we get a palindrome (69655696).

The spelling of 53041661 in words is "fifty-three million, forty-one thousand, six hundred sixty-one".