55372069 has 2 divisors, whose sum is σ = 55372070. Its totient is φ = 55372068.

The previous prime is 55372067. The next prime is 55372073. The reversal of 55372069 is 96027355.

55372069 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28227969 + 27144100 = 5313^2 + 5210^2 .

It is a cyclic number.

It is not a de Polignac number, because 55372069 - 2¹ = 55372067 is a prime.

It is a super-2 number, since 2×55372069² = 6132132050681522, which contains 22 as substring.

Together with 55372067, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55372067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27686034 + 27686035.

It is an arithmetic number, because the mean of its divisors is an integer number (27686035).

Almost surely, 2^55372069 is an apocalyptic number.

It is an amenable number.

55372069 is a deficient number, since it is larger than the sum of its proper divisors (1).

55372069 is an equidigital number, since it uses as much as digits as its factorization.

55372069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 55372069 is about 7441.2410927210. The cubic root of 55372069 is about 381.1508715136.

The spelling of 55372069 in words is "fifty-five million, three hundred seventy-two thousand, sixty-nine".