53313561 has 12 divisors (see below), whose sum is σ = 88009792. Its totient is φ = 30464856.

The previous prime is 53313553. The next prime is 53313569. The reversal of 53313561 is 16531335.

It is an interprime number because it is at equal distance from previous prime (53313553) and next prime (53313569).

It is not a de Polignac number, because 53313561 - 2³ = 53313553 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (53313569) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 423061 + ... + 423186.

Almost surely, 2^53313561 is an apocalyptic number.

It is an amenable number.

53313561 is a deficient number, since it is larger than the sum of its proper divisors (34696231).

53313561 is a wasteful number, since it uses less digits than its factorization.

53313561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 846260 (or 846257 counting only the distinct ones).

The product of its digits is 4050, while the sum is 27.

The square root of 53313561 is about 7301.6135887898. The cubic root of 53313561 is about 376.3678896078.

Adding to 53313561 its reverse (16531335), we get a palindrome (69844896).

The spelling of 53313561 in words is "fifty-three million, three hundred thirteen thousand, five hundred sixty-one".