53216461 has 8 divisors (see below), whose sum is σ = 54213048. Its totient is φ = 52224000.

The previous prime is 53216453. The next prime is 53216467. The reversal of 53216461 is 16461235.

It can be written as a sum of positive squares in 4 ways, for example, as 1102500 + 52113961 = 1050^2 + 7219^2 .

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

It is a 7-Lehmer number, since φ(53216461) divides (53216461-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 53216461 - 2³ = 53216453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53216467) 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 7 ways as a sum of consecutive naturals, for example, 38421 + ... + 39781.

It is an arithmetic number, because the mean of its divisors is an integer number (6776631).

Almost surely, 2^53216461 is an apocalyptic number.

It is an amenable number.

53216461 is a deficient number, since it is larger than the sum of its proper divisors (996587).

53216461 is a wasteful number, since it uses less digits than its factorization.

53216461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2063.

The product of its digits is 4320, while the sum is 28.

The square root of 53216461 is about 7294.9613432835. The cubic root of 53216461 is about 376.1392577767.

Adding to 53216461 its reverse (16461235), we get a palindrome (69677696).

The spelling of 53216461 in words is "fifty-three million, two hundred sixteen thousand, four hundred sixty-one".