55513418 has 8 divisors (see below), whose sum is σ = 83693412. Its totient is φ = 27615616.

The previous prime is 55513417. The next prime is 55513429. The reversal of 55513418 is 81431555.

It can be written as a sum of positive squares in 2 ways, for example, as 47430769 + 8082649 = 6887^2 + 2843^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55513411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70055 + ... + 70842.

Almost surely, 2^55513418 is an apocalyptic number.

55513418 is a deficient number, since it is larger than the sum of its proper divisors (28179994).

55513418 is a wasteful number, since it uses less digits than its factorization.

55513418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141096.

The product of its digits is 12000, while the sum is 32.

The square root of 55513418 is about 7450.7327156462. The cubic root of 55513418 is about 381.4749188639.

The spelling of 55513418 in words is "fifty-five million, five hundred thirteen thousand, four hundred eighteen".