55699240 has 16 divisors (see below), whose sum is σ = 125323380. Its totient is φ = 22279680.

The previous prime is 55699201. The next prime is 55699247. The reversal of 55699240 is 4299655.

55699240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 50381604 + 5317636 = 7098^2 + 2306^2 .

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1392481 = 55699240 / (5 + 5 + 6 + 9 + 9 + 2 + 4 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 55699193 and 55699202.

It is not an unprimeable number, because it can be changed into a prime (55699247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 696201 + ... + 696280.

Almost surely, 2^55699240 is an apocalyptic number.

It is an amenable number.

55699240 is an abundant number, since it is smaller than the sum of its proper divisors (69624140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55699240 is a wasteful number, since it uses less digits than its factorization.

55699240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392492 (or 1392488 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 55699240 is about 7463.1923464426. The cubic root of 55699240 is about 381.9000862567.

The spelling of 55699240 in words is "fifty-five million, six hundred ninety-nine thousand, two hundred forty".