55274069 has 2 divisors, whose sum is σ = 55274070. Its totient is φ = 55274068.

The previous prime is 55274057. The next prime is 55274077. The reversal of 55274069 is 96047255.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55204900 + 69169 = 7430^2 + 263^2 .

It is a cyclic number.

It is not a de Polignac number, because 55274069 - 2²⁴ = 38496853 is a prime.

It is a super-2 number, since 2×55274069² = 6110445407633522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (55274039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27637034 + 27637035.

It is an arithmetic number, because the mean of its divisors is an integer number (27637035).

Almost surely, 2^55274069 is an apocalyptic number.

It is an amenable number.

55274069 is a deficient number, since it is larger than the sum of its proper divisors (1).

55274069 is an equidigital number, since it uses as much as digits as its factorization.

55274069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 75600, while the sum is 38.

The square root of 55274069 is about 7434.6532535149. The cubic root of 55274069 is about 380.9258793590.

The spelling of 55274069 in words is "fifty-five million, two hundred seventy-four thousand, sixty-nine".