55012069 has 4 divisors (see below), whose sum is σ = 62870944. Its totient is φ = 47153196.

The previous prime is 55012063. The next prime is 55012079. The reversal of 55012069 is 96021055.

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 55012069 - 2⁹ = 55011557 is a prime.

It is a super-2 number, since 2×55012069² = 6052655471321522, 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 (55012063) 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, 3929427 + ... + 3929440.

It is an arithmetic number, because the mean of its divisors is an integer number (15717736).

Almost surely, 2^55012069 is an apocalyptic number.

It is an amenable number.

55012069 is a deficient number, since it is larger than the sum of its proper divisors (7858875).

55012069 is an equidigital number, since it uses as much as digits as its factorization.

55012069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7858874.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 55012069 is about 7417.0121342762. The cubic root of 55012069 is about 380.3230609103.

The spelling of 55012069 in words is "fifty-five million, twelve thousand, sixty-nine".