55520236 has 12 divisors (see below), whose sum is σ = 97239240. Its totient is φ = 27737600.

The previous prime is 55520233. The next prime is 55520281. The reversal of 55520236 is 63202555.

It is not an unprimeable number, because it can be changed into a prime (55520233) 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, 711 + ... + 10561.

It is an arithmetic number, because the mean of its divisors is an integer number (8103270).

Almost surely, 2^55520236 is an apocalyptic number.

It is an amenable number.

55520236 is a deficient number, since it is larger than the sum of its proper divisors (41719004).

55520236 is a wasteful number, since it uses less digits than its factorization.

55520236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11264 (or 11262 counting only the distinct ones).

The product of its (nonzero) digits is 9000, while the sum is 28.

The square root of 55520236 is about 7451.1902404918. The cubic root of 55520236 is about 381.4905354458.

The spelling of 55520236 in words is "fifty-five million, five hundred twenty thousand, two hundred thirty-six".