55806245 has 16 divisors (see below), whose sum is σ = 73325952. Its totient is φ = 40436160.

The previous prime is 55806241. The next prime is 55806253. The reversal of 55806245 is 54260855.

It is not a de Polignac number, because 55806245 - 2² = 55806241 is a prime.

It is a super-2 number, since 2×55806245² = 6228673962000050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55806241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14384 + ... + 17846.

It is an arithmetic number, because the mean of its divisors is an integer number (4582872).

Almost surely, 2^55806245 is an apocalyptic number.

55806245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

55806245 is a deficient number, since it is larger than the sum of its proper divisors (17519707).

55806245 is a wasteful number, since it uses less digits than its factorization.

55806245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772.

The product of its (nonzero) digits is 48000, while the sum is 35.

The square root of 55806245 is about 7470.3577558240. The cubic root of 55806245 is about 382.1444886196.

The spelling of 55806245 in words is "fifty-five million, eight hundred six thousand, two hundred forty-five".