53551081 has 8 divisors (see below), whose sum is σ = 55971720. Its totient is φ = 51168768.

The previous prime is 53551079. The next prime is 53551087. The reversal of 53551081 is 18015535.

It can be written as a sum of positive squares in 4 ways, for example, as 27225 + 53523856 = 165^2 + 7316^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 53551081 - 2¹ = 53551079 is a prime.

It is a super-2 number, since 2×53551081² = 5735436552537122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53551087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6706 + ... + 12331.

It is an arithmetic number, because the mean of its divisors is an integer number (6996465).

Almost surely, 2^53551081 is an apocalyptic number.

It is an amenable number.

53551081 is a deficient number, since it is larger than the sum of its proper divisors (2420639).

53551081 is a wasteful number, since it uses less digits than its factorization.

53551081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19163.

The product of its (nonzero) digits is 3000, while the sum is 28.

The square root of 53551081 is about 7317.8604113498. The cubic root of 53551081 is about 376.9259869669.

The spelling of 53551081 in words is "fifty-three million, five hundred fifty-one thousand, eighty-one".