55264181 has 4 divisors (see below), whose sum is σ = 63159072. Its totient is φ = 47369292.

The previous prime is 55264171. The next prime is 55264201. The reversal of 55264181 is 18146255.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55264181 - 2⁶ = 55264117 is a prime.

It is a super-2 number, since 2×55264181² = 6108259403201522, 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 (55264171) 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, 3947435 + ... + 3947448.

It is an arithmetic number, because the mean of its divisors is an integer number (15789768).

Almost surely, 2^55264181 is an apocalyptic number.

It is an amenable number.

55264181 is a deficient number, since it is larger than the sum of its proper divisors (7894891).

55264181 is an equidigital number, since it uses as much as digits as its factorization.

55264181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7894890.

The product of its digits is 9600, while the sum is 32.

The square root of 55264181 is about 7433.9882297459. The cubic root of 55264181 is about 380.9031633442.

The spelling of 55264181 in words is "fifty-five million, two hundred sixty-four thousand, one hundred eighty-one".