55570769 has 2 divisors, whose sum is σ = 55570770. Its totient is φ = 55570768.

The previous prime is 55570751. The next prime is 55570813. The reversal of 55570769 is 96707555.

It is an a-pointer prime, because the next prime (55570813) can be obtained adding 55570769 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32913169 + 22657600 = 5737^2 + 4760^2 .

It is a cyclic number.

It is not a de Polignac number, because 55570769 - 2⁸ = 55570513 is a prime.

It is a super-2 number, since 2×55570769² = 6176220734502722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55570709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27785384 + 27785385.

It is an arithmetic number, because the mean of its divisors is an integer number (27785385).

Almost surely, 2^55570769 is an apocalyptic number.

It is an amenable number.

55570769 is a deficient number, since it is larger than the sum of its proper divisors (1).

55570769 is an equidigital number, since it uses as much as digits as its factorization.

55570769 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 330750, while the sum is 44.

The square root of 55570769 is about 7454.5804040201. The cubic root of 55570769 is about 381.6062410987.

The spelling of 55570769 in words is "fifty-five million, five hundred seventy thousand, seven hundred sixty-nine".