55465181 has 4 divisors (see below), whose sum is σ = 56225052. Its totient is φ = 54705312.

The previous prime is 55465127. The next prime is 55465187. The reversal of 55465181 is 18156455.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 47141956 + 8323225 = 6866^2 + 2885^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55465181 is a prime.

It is a super-2 number, since 2×55465181² = 6152772606725522, 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 (55465187) 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, 379826 + ... + 379971.

It is an arithmetic number, because the mean of its divisors is an integer number (14056263).

Almost surely, 2^55465181 is an apocalyptic number.

It is an amenable number.

55465181 is a deficient number, since it is larger than the sum of its proper divisors (759871).

55465181 is an equidigital number, since it uses as much as digits as its factorization.

55465181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 759870.

The product of its digits is 24000, while the sum is 35.

The square root of 55465181 is about 7447.4949479674. The cubic root of 55465181 is about 381.3643958068.

The spelling of 55465181 in words is "fifty-five million, four hundred sixty-five thousand, one hundred eighty-one".