55533513 has 12 divisors (see below), whose sum is σ = 86133840. Its totient is φ = 31733352.

The previous prime is 55533479. The next prime is 55533529. The reversal of 55533513 is 31533555.

It is not a de Polignac number, because 55533513 - 2⁶ = 55533449 is a prime.

It is a super-2 number, since 2×55533513² = 6167942132242338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55533563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188743 + ... + 189036.

It is an arithmetic number, because the mean of its divisors is an integer number (7177820).

Almost surely, 2^55533513 is an apocalyptic number.

It is an amenable number.

55533513 is a deficient number, since it is larger than the sum of its proper divisors (30600327).

55533513 is a wasteful number, since it uses less digits than its factorization.

55533513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377796 (or 377789 counting only the distinct ones).

The product of its digits is 16875, while the sum is 30.

The square root of 55533513 is about 7452.0811187211. The cubic root of 55533513 is about 381.5209426542.

The spelling of 55533513 in words is "fifty-five million, five hundred thirty-three thousand, five hundred thirteen".