55532313 has 12 divisors (see below), whose sum is σ = 80726308. Its totient is φ = 36784800.

The previous prime is 55532311. The next prime is 55532317. The reversal of 55532313 is 31323555.

It can be written as a sum of positive squares in 2 ways, for example, as 16257024 + 39275289 = 4032^2 + 6267^2 .

It is not a de Polignac number, because 55532313 - 2¹ = 55532311 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 (55532311) 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, 18238 + ... + 21063.

Almost surely, 2^55532313 is an apocalyptic number.

It is an amenable number.

55532313 is a deficient number, since it is larger than the sum of its proper divisors (25193995).

55532313 is a wasteful number, since it uses less digits than its factorization.

55532313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39464 (or 39461 counting only the distinct ones).

The product of its digits is 6750, while the sum is 27.

The square root of 55532313 is about 7452.0006038647. Note that the first 3 decimals coincide. The cubic root of 55532313 is about 381.5181945932.

Adding to 55532313 its reverse (31323555), we get a palindrome (86855868).

The spelling of 55532313 in words is "fifty-five million, five hundred thirty-two thousand, three hundred thirteen".